Which of the following is primarily concerned with protection against germs
Liver
Lymphatic tissue
Kidney
Thyroid
Which one of the following pairs of disease can spread through blood transfusion
Which of the following diseases is caused by a protozoan?
Schizont is a stage in the life history of malaria parasite occurring in
$X$ - $CO$ is responsible for skin cancer
$Y$ - Strong magnetic field is used in $MRI$ to diagnose cancer
What is the main cause of concern for today's youth ?