Cellular communication and differentiation.
D000818:Animals; D005075:Biological Evolution; D002450:Cell Communication; D002454:Cell Differentiation; D002874:Chromosome Mapping; D004330:Drosophila; D005260:Female; D008285:Major Histocompatibility Complex; D008297:Male; D051379:Mice; D010641:Phenotype; D010802:Phylogeny; D011003:Ploidies; D012737:Sex Factors; D013601:T-Lymphocytes / Q000502:physiology / Q000648:ultrastructure