Which is not a ’opiate narcotic'
Amphetamine
Morphine
Heroin
Pethidine
It interferes with the transport of the neurotransmitter dopamine.
Widal test is used for the diagnosis of
Use of which causes destruction of chromosomes
$A$ - Acid in the stomach and saliva in the mouthare examples of physiological barrier.
$R$ - Tears from eyes is example of physicalbarrier.