Identify correct group for primary lymphoidorgans

  • A

    Bone marrow, spleen

  • B

    Thymus, Tonsils

  • C

    Lymph node, Appendix

  • D

    Thymus, Bonemarrow

Similar Questions

Lymphocytes secrete a protein which causes the dilation of blood vessels. The protein is

What is true about $T-lymphocytes$ is mammals?

Tse-tse fly is a vector for sleeping sickness which transmits the infective stage of which of the following parasite

Match the following bacteria with the diseases and choose the correct option

Column $-I$ Column $-II$
$(A)$ Treponema pallidum $(1)$ Plaque
$(B)$ Yersinia pestis $(2)$ Anthrax
$(C)$ Bscillus anthrasis $(3)$ Syphilis
$(D)$ Vibrio $(4)$ Cholera

In allergy and urticaria the local arterioles dilate due to increased substance from mast cells, called