Who invented the injection when and where
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1
Explanation:
1844: Irish physician Francis Rynd invented the hollow needle and used it to make the first recorded subcutaneous injections, specifically a sedative to treat neuralgia. 1853: Charles Pravaz and Alexander Wood independently developed medical syringes with a needle fine enough to pierce the skin.
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Explanation:
The first hypodermic needle was probably made by Francis Rynd in Dublin in 1844,
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