Antibody formation and immunity production is done by a protein called globulin present in the

Read the following statements
$a.$ Heroin, commonly called smack, is obtained by acetylation of morphine.
$b.$ Cocaine is obtained from the latex of Papaver somniferum.
$c.$ Dopamine is excitatory neurotransmitter.
$d.$ Morphine is an effective sedative and pain killer.
Mark the option which includes both correct statement

Common symptoms of measles are

‘Haemophilia' disease is caused due to lack of

Diphtheria is caused by

The causative agent of mad­cow disease is a