Tag: Antigen

The human immune system generates a slower, less robust reaction the very first time it encounters a new pathogen, a process known medically as the primary immune response. This initial exposure is critical for training the body's defenses.

The human immune system contains an astounding capacity for detecting foreign invaders, a feat made possible by specialized proteins. A key player in this process is the T-cell Receptor, or TCR, which serves as a highly specific sensor for identifying threats like viruses and bacteria.