{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T11:59:18Z","timestamp":1792065558145,"version":"4.4.0"},"reference-count":49,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T00:00:00Z","timestamp":1761696000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T00:00:00Z","timestamp":1761696000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Microscopy Res &amp; Technique"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The esophagus and stomach of nine adult healthy hooded crows (\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Corvus cornix<\/jats:italic>\n                    <\/jats:styled-content>\n                    ) were collected for light and scanning electron microscopes (SEM) as well as histomorphometric analysis. SEM showed that the esophageal mucosa has round\u2010shaped gland openings, extending to its junction with the proventriculus. The proventriculus luminal surface had roughly circular gland openings surrounded by simple mucosal folds that appeared as raised tubular structures. A cuticle at the proventricular\u2013gizzard junction was present. The gizzard cuticle appeared as thread\u2010like rods, while the tubular gastric glands resembled broccoli sprouts. Histologically, the esophageal mucosa exhibited argyrophilic endocrine cells within both the lining epithelium and glandular epithelium. Numerous telocytes surrounded the secretory acini of the superficial and deep proventricular glands and encircled blood vessels in the lamina propria. Columnar to cuboidal (oxynticopeptic) cells were abundant in the deep proventricular glands. The most superficial epithelial cells of the gizzard contained excessive metachromatic granules. Telocytes were detected around the glandular secretory acini within the lamina propria and muscle fibers of the gizzard. The results of the current study suggest that the esophageo\u2010gastric tube histomorphology in hooded crows revealed some characteristics that might be attributed to adaptation to a diverse urban and rural diet.\n                  <\/jats:p>","DOI":"10.1002\/jemt.70086","type":"journal-article","created":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T18:33:10Z","timestamp":1761762790000},"page":"520-537","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Comprehensive Structural Characterization of the Esophageo\u2010Gastric Tube in the Hooded Crow (\n                    <i>Corvus cornix<\/i>\n                    ): Histological, Histochemical, and Ultrastructural Insights"],"prefix":"10.1002","volume":"89","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5641-9260","authenticated-orcid":false,"given":"Fatma A.","family":"Madkour","sequence":"first","affiliation":[{"name":"Department of Anatomy and Embryology, Faculty of Veterinary Medicine South Valley University  Qena Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7884-8234","authenticated-orcid":false,"given":"Elsayed S. I.","family":"Mohammed","sequence":"additional","affiliation":[{"name":"Avian Research Center King Faisal University  Al\u2010Ahsa Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0786-4779","authenticated-orcid":false,"given":"Mohammed","family":"Al\u2010Rasheed","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences, College of Veterinary Medicine King Faisal University  Al\u2010Ahsa Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6822-1454","authenticated-orcid":false,"given":"Fatma","family":"Abdelhakeem","sequence":"additional","affiliation":[{"name":"Department of Anatomy and Embryology, Faculty of Veterinary Medicine South Valley University  Qena Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,10,29]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/ahe.12798"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010020\u201070032\u2010y"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1159\/000452243"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.24632"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12917\u2010024\u201004341\u2010z"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.24146"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40850\u2010022\u201000161\u20106"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tice.2023.102264"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.21608\/idj.2019.64030"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010019\u201052335\u2010x"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.3923\/ajpsaj.2011.56.67"},{"issue":"2","key":"e_1_2_11_13_1","first-page":"181","article-title":"Comparative Anatomical, Histological, and Electron Microscopical Studies on the Cervical Region of the Esophagus in Some Birds With Different Diet Habits","volume":"13","author":"Ali H. M.","year":"2023","journal-title":"Journal of Advanced Veterinary Research"},{"key":"e_1_2_11_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/ahe.13036"},{"key":"e_1_2_11_15_1","doi-asserted-by":"publisher","DOI":"10.3923\/ajas.2015.280.292"},{"issue":"1","key":"e_1_2_11_16_1","first-page":"1457","article-title":"Histomorphometric and Histochemical Finding of the Proventicular and Ventricular Stomach Between the African Grey Parrot (Psittacus erithacus) and Black Francolin (Francolinus) in South Iraq","volume":"21","author":"Al\u2010Samawy E. R.","year":"2021","journal-title":"Medico\u2010Legal Update"},{"issue":"1","key":"e_1_2_11_17_1","first-page":"1671","article-title":"Histomorphological Study of Proventricular and Gizzard in Adult Starling Bird (Sturnus vulgaris)","volume":"20","author":"Al\u2010Taai S. A.","year":"2020","journal-title":"Plant Archives"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.22055\/ivj.2022.330980.2447"},{"issue":"4","key":"e_1_2_11_19_1","first-page":"92","article-title":"Histological and Histochemical Studies on the Esophagus of Pigeon (\n                     Columba livia\n                   Domestica)","volume":"8","author":"Bansal S.","year":"2023","journal-title":"International Journal of Veterinary Sciences and Animal Husbandry"},{"key":"e_1_2_11_20_1","doi-asserted-by":"publisher","DOI":"10.5455\/javar.2018.e279"},{"key":"e_1_2_11_21_1","doi-asserted-by":"publisher","DOI":"10.5455\/ajvs.1377"},{"key":"e_1_2_11_22_1","doi-asserted-by":"publisher","DOI":"10.5038\/2074-1235.45.2.1222"},{"key":"e_1_2_11_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcmm.12578"},{"issue":"4","key":"e_1_2_11_24_1","first-page":"308","article-title":"Histological, Histochemical and Ultrastructural Studies on the Proventriculus of Ostrich (Struthio camelus)","volume":"8","author":"El\u2010Shammaa M.","year":"2019","journal-title":"International Journal of Veterinary Science"},{"key":"e_1_2_11_25_1","unstructured":"El\u2010Shamy S.1996.\u201cHistological and Histochemical Studies of the Digestive Tract in Fowl \u201d PhD thesis Assiut University."},{"key":"e_1_2_11_26_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010023\u201045355\u20101"},{"key":"e_1_2_11_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.23777"},{"key":"e_1_2_11_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.morpho.2019.09.006"},{"key":"e_1_2_11_29_1","volume-title":"Avian Digestive System","author":"Jacob J.","year":"2011"},{"issue":"2","key":"e_1_2_11_30_1","first-page":"159","article-title":"Morphological and Histological Finding of Proventriculus and Gizzard in Iraqi Local Crow (Linnoecus corvus)","volume":"20","author":"Khalaf F. H.","year":"2023","journal-title":"Journal of University of Kerbala"},{"issue":"5","key":"e_1_2_11_31_1","first-page":"101","article-title":"Distribution and Morphology of Argyrophilic Cells in the Digestive Tract During Post\u2010Embryonic Development of Chinese Yellow Quail","volume":"47","author":"Li Pei L. P.","year":"2012","journal-title":"Chinese Journal of Zoology"},{"key":"e_1_2_11_32_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469\u20107580.2010.01243.x"},{"key":"e_1_2_11_33_1","doi-asserted-by":"publisher","DOI":"10.21608\/avmj.2019.168916"},{"key":"e_1_2_11_34_1","doi-asserted-by":"publisher","DOI":"10.21608\/svu.2018.19860"},{"issue":"1","key":"e_1_2_11_35_1","first-page":"42","article-title":"Post\u2010Hatching Development of Ventriculus in Muscovy Duck: Light and Electron Microscopic Study","volume":"12","author":"Madkour F.","year":"2022","journal-title":"Journal of Advanced Veterinary Research"},{"key":"e_1_2_11_36_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010024\u201077650\u2010w"},{"key":"e_1_2_11_37_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12917\u2010023\u201003784\u20100"},{"key":"e_1_2_11_38_1","doi-asserted-by":"publisher","DOI":"10.1186\/s40850\u2010022\u201000147\u20104"},{"key":"e_1_2_11_39_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.24203"},{"key":"e_1_2_11_40_1","doi-asserted-by":"publisher","DOI":"10.1111\/ahe.12411"},{"key":"e_1_2_11_41_1","doi-asserted-by":"publisher","DOI":"10.1590\/1806-9061-2024-2008"},{"key":"e_1_2_11_42_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439\u20100264.2009.00930.x"},{"key":"e_1_2_11_43_1","volume-title":"Dukes' Physiology of Domestic Animals","author":"Reece W. O.","year":"2015"},{"key":"e_1_2_11_44_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010018\u20100084\u20104"},{"key":"e_1_2_11_45_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010024\u201062103\u20101"},{"key":"e_1_2_11_46_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41598\u2010021\u201086503\u20109"},{"key":"e_1_2_11_47_1","volume-title":"Bancroft's Theory and Practice of Histological Techniques E\u2010Book","author":"Suvarna K. S.","year":"2018"},{"key":"e_1_2_11_48_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.23722"},{"key":"e_1_2_11_49_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00580-017-2425-3"},{"key":"e_1_2_11_50_1","doi-asserted-by":"publisher","DOI":"10.1111\/jcmm.12134"}],"container-title":["Microscopy Research and Technique"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jemt.70086","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jemt.70086","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jemt.70086","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T16:07:18Z","timestamp":1770998838000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/jemt.70086"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,10,29]]},"references-count":49,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,3]]}},"alternative-id":["10.1002\/jemt.70086"],"URL":"https:\/\/doi.org\/10.1002\/jemt.70086","archive":["Portico"],"relation":{},"ISSN":["1059-910X","1097-0029"],"issn-type":[{"value":"1059-910X","type":"print"},{"value":"1097-0029","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,10,29]]},"assertion":[{"value":"2025-06-20","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-10-03","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-10-29","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}