How is a scientific law different from a scientific theory

A  

scientific law

describes the behavior of something that occurs. It is often described in mathematical relationships. For example the general law of gravitation describes the force between objects of various masses at various distances  

A  scientific theory

, however, attempts to describe why something works. There are several theories of gravity, which attempt to explain why it occurs as it does.  

Both Scientific Theories and Laws are based upon observation and experimentation. They can be disproved or modified to accommodate new discoveries, and must make predictions about future experiments and observations.

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.

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