the intimate and protracted association between two or more organisms of different species is referred to as

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

human didn't come from monkeys man i hate these stupid teachers

within 30 of the equator hope this