Which of the following cells are associated with immune system of body
Neutrophils
Macrophages
Lymphocytes
All of these
Differentiate the following and give examples of each:
$(a)$ Innate and acquired immunity
$(b)$ Active and passive immunity
Give differences: $T$-lymphocytes and $B$-lymphocytes
What is the basic principle of vaccination ? How do vaccines prevent microbial infections ? Name the organism from which hepatitis $B$ Vaccine is produced.
Identify $X$ from Figure
Grafted kidney may be rejected in a patient due to