We isolated and identified naturally processed peptides selected by antigen-presenting cells homozygous for expression of I-Ag7 or I-Ad class II MHC molecules, or from heterozygous antigen-presenting ...

Homozygous, or homozygosity, refers to the inheritance of genes from each biological parent. Inheriting faulty genes from both parents can cause a person to develop the associated condition. Genetic ...

In general, humans have the same genes. A number of genes are varied. These control our physical traits and health. Each variation is called an allele. You inherit two alleles for each gene. One comes ...

Any substance that induces the immune system to produce antibodies against it is called an antigen. Any foreign invaders, such as pathogens (bacteria and viruses), chemicals, toxins, and pollens, can ...