Helper T cells are very important cells in the adaptive immunity. They are required for almost all adaptive immune responses and They also help activate cytotoxic T cells and macrophages to attack infected cells.
I hope this helped, Good Luck!!
Answer:
The three components of the cell theory state that all living organisms are composed of one or more cells, the cell is the basic unit of structure function and organization. and all cells come from pre existing cells Hopefully this helps!
The answer is: " biogeography " .
_______________________________
Hope this helps!
Best wishes within your academic endeavors —
and within the "Brainly" community!
______________________________
Answer:
B. Second
Explanation:
In the second trimester the bony parts of the skeleton begin to form
.
I attached a picture showing how to do it
