Q.) Interferons are very special defence mechanisms which operate by:
Q.) How are antibody producing cells stimulated?
Q.) Cytotoxic T cells can be activated via which of the following?
Q.) What happens during the 'incubation period'?
Q.) A special feature of adaptive immunity is:
Q.) What is the most common way for a virus to kill a cell?
Q.) Papillomaviruses cause warts and cancer but how do they most often infect humans?
Q.) Which of the following is the most special characteristic of the adaptive immune system?
Q.) Poliovirus can most easily become more virulent by which of the following processes?