Tincture : :----- Histamine : :-----.

Tincture benzoin is obtained from

Define histamine.

Mention one use of each of the following : (i) Ranitidine (ii) Paracetamol (iii) Tincture of iodine.

50 mL tincture of benzoin, an antiseptic solution contains 10 ml of benzoin. The volume percentage of benzoin is ……………..

The .........secrete substances such as heparin serotonin and histamines.