By R.S. Karunaratne | Sunday Observer

By R.S. Karunaratne

The leech is an aquatic or terrestrial annelid worm with suckers at both ends. Many species are bloodsucking parasites. This has given rise to the transferred sense of a person who extorts profit from or sponges on others. Leeches were traditionally used in medicine to draw off blood from patients. Its saliva contains an anticoagulant used after reconstructive surgery to...
3 October, 2021
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