PMID- 22923897 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20121002 LR - 20220331 IS - 1998-393X (Electronic) IS - 0973-029X (Print) IS - 0973-029X (Linking) VI - 16 IP - 2 DP - 2012 May TI - Pathophysiology of Langerhans cells. PG - 239-44 LID - 10.4103/0973-029X.99077 [doi] AB - Langerhans cells (LCs) were first described by Paul Langerhans, in 1868, as dendritically shaped cells, which were located in the squamous epithelia of epidermis. Later on, these cells were identified in all stratified squamous epithelium of mammals. Dendritic cells (DCs) play an important role in local defense mechanisms in the epithelium. LCs are situated usually in the suprabasal layer of stratified squamous epithelia of oral mucosa and epidermis of skin. They constitute 3% of the cell population in epidermis. LCs are thought to act as antigen presenting cells (APCs) during initiation of immune responses. With the help of APCs, the lymphocytes are able to recognize and respond to specific microbes. In this paper we have reviewed the origin, distribution, demonstration and mechanism of action of LCs and their role in different pathological conditions. FAU - Jaitley, Shweta AU - Jaitley S AD - Department of Oral Pathology and Microbiology, K D Dental College and Hospital, Mathura, Uttar Pradesh, India. FAU - Saraswathi, Tr AU - Saraswathi T LA - eng PT - Journal Article PL - India TA - J Oral Maxillofac Pathol JT - Journal of oral and maxillofacial pathology : JOMFP JID - 101227995 PMC - PMC3424941 OTO - NOTNLM OT - Antigen presenting cells OT - Langerhans cells OT - clear cells OT - dendritic cells COIS- Conflict of Interest: None declared. EDAT- 2012/08/28 06:00 MHDA- 2012/08/28 06:01 PMCR- 2012/05/01 CRDT- 2012/08/28 06:00 PHST- 2012/08/28 06:00 [entrez] PHST- 2012/08/28 06:00 [pubmed] PHST- 2012/08/28 06:01 [medline] PHST- 2012/05/01 00:00 [pmc-release] AID - JOMFP-16-239 [pii] AID - 10.4103/0973-029X.99077 [doi] PST - ppublish SO - J Oral Maxillofac Pathol. 2012 May;16(2):239-44. doi: 10.4103/0973-029X.99077.