Follicular dendritic cells reside primarily in which of the following tissue/organ?
question 9 options:
a)
the bone marrow
b)
the thymus
c)
primary lymphoid tissues
d)
secondary lymphoid tissues
e)
none of these

The correct answer will be option D-secondary lymphoid tissues.

Explanation:

Follicular dendritic cells or FDCs are non-migratory dendrite cells found in the follicles of B cell areas of any secondary lymphoid organs and belong to the stromal cells of these lymphoid organs.

They help in providing immunity by shaping the responses of B in the chronic inflammatory response and auto-immune disease. These cell help in the selection of memory B cells by presenting antigens to potential memory cells to which only  B cell with B cell receptors can bind.

Thus, option D-secondary lymphoid tissues is the correct answer.

the answer is a) a shiprock was formed by igneous process

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."