Identify $X$ from Figure
Bone marrow
Lymph node
Lymph vessel
Thymus
The antibodies are
Transplantation of tissues/organs fails often due to nonacceptance by the patient’s body. Which type of immune response is responsible for such rejections?
In higher vertebrates, the immune system can distinguish selfcells and non-self. If this property is lost due to genetic abnormality and it attacks selfcells, then it leads to
Humoral immunity is due to
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?