L2: Adaptive System - Cells & Tissues Flashcards
1
Q
NK cell origins
A
stem from lymphoid progenitor stem cells but are apart of innate immunity not adaptive
2
Q
primary lymphoid organs
A
thymus and bone marrow
3
Q
secondary lymphoid organs
A
spleen
lymph nodes
mucosa associated lymphoid tissue
4
Q
t lymphocytes origins and maturation
A
generate in thymus
proliferate
differentiate
and complete maturation there
5
Q
structures of ag receptors vary from one to another but are ?
A
are all identical on a single cell
6
Q
naïve lymphocyte death
A
die after 1 to 3 months if they don’t recognize a ag
7
Q
thymus thru life
A
large in infancy and til puberty
small in adult
replaced by fat and CT by elderly stage
