How is blood test is useful to diagnose the disease.explain with daily life situation?
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blood test is the very basic diagnosis
any pathogen for that cause has only two options to enter the body ( external and internal)
external - skin
internal - endoderm
our body is maximum occupied by two things that is either blood vessels or nerve cells
if any pathogen has to enter the body it should either go through blood or through nerve cells
usually blood is the main transportation for pathogen
like when a doctor has to inject vaccine he has to make it through blood
so for any diagnosis of diseases blood test is the primary way
any pathogen for that cause has only two options to enter the body ( external and internal)
external - skin
internal - endoderm
our body is maximum occupied by two things that is either blood vessels or nerve cells
if any pathogen has to enter the body it should either go through blood or through nerve cells
usually blood is the main transportation for pathogen
like when a doctor has to inject vaccine he has to make it through blood
so for any diagnosis of diseases blood test is the primary way
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