Transplantation of tissues/organs fails often due to nonacceptance by the patient’s body. Which type of immune response is responsible for such rejections?
Cellmediated immune response
Hormonal immune response
Physiological immune response
Autoimmune response
‘Second line of defence' is known as
$T$- Lymphocytes originate from
‘First line of defence' is known as
The yellowish fluid "colostrum" secreted by mammary glands of mother during the initial days of lactation has abundant antibodies ($lgA$) to protect the infant. This type of immunity is called as