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B
milk of magnesia
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C
argyrols
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D
colloidal gold
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E
colloidal silver
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Solution
The correct option is A colloidal antimony The disease kala-azar is cured by colloidal antimony. Colloidal calcium and gold are injected to enhance the vitality of the human body. Colloidal silver (argyrols and protagol) is used in eye lotion.