In cancer, .................. uses strong magnetic fields and non-ionizing radiations to accurately detect pathological and physiological changes in the living tissue.
Radiography
Computed tomography
$MRI$
$ELISA$
It is not a symptom of pneumonia
Which of the following is a non-specific type of defense that is present at the time of birth?
Among the noninfectious diseases, which of the following is most common fatal diseases of human beings?
In mammals, histamine is secreted by
In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
$(a)$ Fill in $(A)$ and $(B)$
$(b)$ Why is the virus called retrovirus ?
$(c)$ Can the infected cell survive while viruses are being replicated and released ?