IMMUNOLOGY

Detailed explanation-1: -Moreover, the innate immune system can distinguish between different classes of pathogens and recruit the most effective form of adaptive immune response to eliminate them.

Detailed explanation-2: -Because the adaptive immune system can learn and remember specific pathogens, it can provide long-lasting defense and protection against recurrent infections. When the adaptive immune system is exposed to a new threat, the specifics of the antigen are memorized so we are prevented from getting the disease again.

Detailed explanation-3: -Adaptive immune responses, however, are slow to develop on first exposure to a new pathogen, as specific clones of B and T cells have to become activated and expand; it can therefore take a week or so before the responses are effective.

Detailed explanation-4: -The adaptive immune system takes some time: 1-2 weeks, to mount a full-fledged response to any pathogen or biological macromolecule that it sees for the first time. However, the second time it sees the same pathogen or macromolecule, it mounts an immediate, even stronger response.

Detailed explanation-5: -The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen. The main cells of the immune system are lymphocytes known as B cells and T cells.

Detailed explanation-6: -And the immune system recognizes when certain invaders are foreign and could be dangerous. Adaptive immunity: Adaptive (or active) immunity develops throughout our lives. We develop adaptive immunity when we’re exposed to diseases or when we’re immunized against them with vaccines.

Detailed explanation-7: -The adaptive, or acquired, immune response takes days or even weeks to become established-much longer than the innate response; however, adaptive immunity is more specific to pathogens and has memory. Adaptive immunity is an immunity that occurs after exposure to an antigen either from a pathogen or a vaccination.