Which organ is considered as "Graveyard of $RBC$'' where most of them are destroyed by macrophages
Red bone marrow
Spleen
Kidney
Intestine
Malaria fever coincides with liberation of
The test for ‘syphilis' was developed by
The spread of $AIDS$ disease is promoted by
Smoking increases ______ content in blood and reduces the concentration of haembound oxygen. Fill the blank suitably