{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T00:29:28Z","timestamp":1761006568932,"version":"build-2065373602"},"reference-count":53,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2005,6,16]],"date-time":"2005-06-16T00:00:00Z","timestamp":1118880000000},"content-version":"vor","delay-in-days":7868,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["pathsocjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["The Journal of Pathology"],"published-print":{"date-parts":[[1983,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Quantitative results of Mycobacterial BCG antigen, immunoglobulin and complement in rat skin lesions during the evolution of the granuloma reveal peak values of these factors at 49 days. The combination of antigen, Ig and complement, present extracellularly and in polymorphs at this time, indicates immune complex formation at an antigen\u2013antibody ratio which may approximate to equivalence. This development coincides with mass lysis of host macrophages, and is followed by a sharp reduction in the antigen load.<\/jats:p><jats:p>At 8 mth, surviving bacilli are coated with antibody and complement, and sequestrated in activated macrophages. It is possible that this antibody is non\u2010specific and protective to the bacilli, leading to a second multiplication of organisms. But by 1 yr and 8 mth all the bacilli are dead, and immunoglobulins and complement are at very low levels.<\/jats:p><jats:p>Although immune complex deposition and macrophage lysis was not associated with complete elimination of bacilli, it marked a turning point in the infection when the bacterial load was high and cell mediated immunity (CMI) was lacking. CMI may be important, especially at low antigen levels, but the crucial role here appears to have been played by complexed antibody. These experimental findings parallel those in human cutaneous leishmaniasis. They may explain some forms of necrosis in this condition and in tuberculosis.<\/jats:p>","DOI":"10.1002\/path.1711410405","type":"journal-article","created":{"date-parts":[[2005,6,21]],"date-time":"2005-06-21T14:00:25Z","timestamp":1119362425000},"page":"469-482","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Extravascular immune complexes in experimental Mycobacterial BCG granulomas"],"prefix":"10.1002","volume":"141","author":[{"given":"Marian J.","family":"Ridley","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. S.","family":"Ridley","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D. 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