Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The component causing this could be:

Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?

Antibodies present in colostrum which protect the new born from certain diseases is of

Antivenom against snake poison contains:

Which of the following is not a lymphoid tissue?