$T$- Lymphocytes originate from
Thymus
Bone marrow
Liver
None of these
If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence ?
Humoral immunity is due to
Write a note on lymphoid organs.
What is the role of spleen in Human body?
Consider the following statements
$I.$ People should get vaccination to avoid infection
$II.$ Vaccination is available against polio, cholera, typhoid, tuberculosis and many othe disease
$III.$ Eradication of vectors are necessary in diseases like malaria and filariasis
$IV. $ Dengue and chikengunya, both are spread by Culex mosquitoes
Which of the statements given above are correct?