Opioids are the drugs, which bind to specific opioid receptors present in our
Central nervous system
Gastrointestinal tract
Both $(a)$ and $(b)$
Urinogenital system
A child would develop mental illness if one does not get
Louse is ectoparasite of
Which one of the following is a stimulant
‘Valium' is an example of
Haemozoin formed in malaria is produced by