The immune system, which combats invading harmful organisms, viruses
and other detrimental pathogens, is a complex system of defensive
barricades intended to protect and annihilate any foreign substance
that is considered a threat to the body.  It is composed of numerous
cells, which allows it to serve its vital function.  One of the most
essential among these types of cells is the white blood cells also
known as Leukocytes.  These cells which are granular and agranular are
accountable for the defense system in the body.  There are actually
millions of white blood cells circulating in the human body; in fact
in every drop of blood contains almost half a million of these mighty
cells.

lowwhitebloodcells Your White blood cells like the red blood cells are formed in the bone
marrow which is specifically designed to battle infections. With the
absence of your white blood cells, it is no longer feasible for your
immune system to perform its innate task.  In moments when the immune
system can no longer work and perform well, there will be an
inevitable interference in the body’s capability to uphold balance and
homeostasis.  This disturbance will consequently result to a variety
of diseases.

 There are six types of white blood cells found in your body, each of
which has a special role to perform in your immune defense. The six
types of WBCs are split in to two major categories, granulocytes and
agranulocytes. Granulocytes are further classified into three:
neutrophils, basophils and eosinophils. They are termed granulocytes
for the reason that they contain tiny vessels of enzymes in
membrane-bound "packets".

GRANULOCYTES

NEUTROPHILS: "the first responders, ready for action!"

About 65% of all white blood cells in your body are neutrophils. They
are the chief defenders from infections. Hence, Infections are
frequently diagnosed and identified by looking at a total PMN count
for it is usually the first among the white blood cells to rise in an
infection.

BASOPHILS: “few yet potent”

They compose approximately 1% of your total white blood cells whose
main purpose is to discharge a chemical known as histamine in reaction
to an infection. Histamine is a substance known to serve a variety of
functions, but it is principally in charge for starting an
inflammatory response.

EOSINOPHILS: “Slayer of the parasites”

4% of your leukocytes are eosinophils and are the primary defense
against parasitic infections. They are also generally elevated in
events of allergic reactions, such as hives and asthma.

AGRANULOCYTES

LYMPHOCYTES: “Antibodies for stronger body armor”

The first of the agranulocytes are lymphocytes which comprises about
25% of white blood cells. Like the other agranulocytes they do not
have the membrane-bound particles that are evident in other categories
of white blood cells. Lymphocytes are further classified into three; B
cells, T cells, and Natural Killer Cells.

B cells are liable for the production of the antibodies to foreign
organisms like bacteria and viruses. Antibodies are tiny chemicals
that are intended to assault definite chemical markers on the surface
of the target.

T cells on the other hand, are the coordinators and facilitators of an
immune defense against a virus or bacteria. These cells come in two
different classifications, CD4 and CD8. CD4 T cells are the ardent
armies that penetrate and produce a lethal effect to the foreign
organisms that constantly attack our fragile bodies. The fine points
of T cell operation is indeed very intricate and well beyond the range
of this piece of writing.

MONOCYTES: “I devour what I see that is not good”

Monocytes compose approximately 6% of the total white blood and have
the longest life span in comparison with other white blood cells. They
trek around in your blood, in constant scout to get rid of viruses,
bacteria and toxins. The term "phagocytosis" refers to the process
when these monocytes devours harmful invaders then break them in to
minute particles in order for the T cells to "learn" about the
chemical composition of the invader and make it easier to slay the
rest of their kind.

MACROPHAGES: “Gulping down what is unpleasant “

The last classification of white blood cell is actually a tailored and
revolutionized monocyte. As monocytes journey in to the tissues of
your body, they change slightly and transform in to macrophages. The
role of a macrophage is analogous to that of a monocyte.

Your body has an amazing network of defense systems. The complex
function of the white blood cells help fight the different invaders
that enter your body. The two types of leukocytes: the agranulocytes
and granulocytes have specific functions for a more dependable defense
system. The different functions of your white blood cells are vital in
protecting the body from different invaders, rest assured, each and
every one of these cells is ready to assume full responsibility in
keeping you and your immune system healthy.