400
a. main types of WBCs
b. larger, horse shoe shaped nucleus, becomes marcophages, first line of defense at the infection site and composes 1% of WBCs
c. nucleus is dark and takes up almost whole cell,lymphnodes(main defense) produces antibodies(30%) WBCs
What are Agranulocytes(lacking granular cytoplasm) , Monocytes and Lymphocytes?