"thymocyte progenitors enter the subcapsular region of the thymus as double-negative cd3- t cells where the double negative refers to lack of cluster and "

The Thymocyte progenitors enter the subcapsular region of the thymus as double-negative cd3- t cells where the double negative refers to lack of cluster determinants CD4 and CD8. Double-negative cd3- t cells exist as small population that is 1%-5% of lymphocytes in the lymphoid organs and peripheral blood of humans and normal rodents.

No that answer is wrong. you have written the function of mitochondria in chloroplast and function of chloroplast in mitochondria.