Question

.2.6 Auto Immunity
Com
Memory-based acquired immunity evolved in higher vertebrates based
on the ability to differentiate foreign organisms (e.g., pathogens) from self-
cells. While we still do not understand the basis of this, two corollaries of
this ability have to be understood. One, higher vertebrates can distinguish
foreign molecules as well as foreign organisms. Most of the experimental
immunology deals with this aspect. Two, sometimes, due to genetic and
other unknown reasons, the body attacks self-cells. This results in damage
to the body and is called auto-immune disease. Rheumatoid arthritis
which affects many people in our society is an auto-immune disease.​

Answer 1

Answer:

Memory-based acquired immunity evolved in higher vertebrates based

on the ability to differentiate foreign organisms (e.g., pathogens) from self-

cells. While we still do not understand the basis of this, two corollaries of

this ability have to be understood. One, higher vertebrates can distinguish

foreign molecules as well as foreign organisms. Most of the experimental

immunology deals with this aspect. Two, sometimes, due to genetic and

other unknown reasons, the body attacks self-cells. This results in damage

to the body and is called auto-immune disease. Rheumatoid arthritis

which affects many people