Identify correct group for primary lymphoidorgans
Bone marrow, spleen
Thymus, Tonsils
Lymph node, Appendix
Thymus, Bonemarrow
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 |