Elizabeth

thebioguru:

Schistosomas are helminthic parasites more commonly known as blood flukes. At maturity they live in the intestinal blood vessels of humans, where copulation occurs with the female sitting in the groove of the male to receive sperm for fertilization. A gravid female then migrates to vessels of the rectum to lay her eggs, which are passed through the feces and into the external environment. The eggs hatch, and larva burrow into the tissue of their intermediate host: snails. They undergo successive generations of maturation, forming sporocysts in the snail, then become free swimming cercariae larva that penetrate the definitive host (humans) to reach sexual maturity and continue the cycle. These parasites are common in eastern Asia where rice is the dominate agricultural product. Rice farms are perfect environments for blood flukes because both definitive and intermediate hosts are present in the aquatic environment necessary for the developmental stages of the larva.

Creepily interesting

1 year ago

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    Parasites always fascinate me for the complexity of their life cycles. Evolution is a wonderous thing.

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    part of my job in the lab was isolating shistosome eggs from mouse livers, and then inject them into mice by...

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    “ini kemaren keluar di ujian SIMIC” :||

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