Tag: Microbiology
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How black turned white
Kateryna TsoiKharkiv, Ukraine In 1876, the World’s Fair was held outside Europe for the first time, taking place in Philadelphia and coinciding with the centenary of the US Declaration of Independence. Thomas Eakins, not yet a well-known artist, decided to present a large-scale canvas at the exhibition of a subject he knew well. An ardent…
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The leech makes a comeback
Meryl SigatonCity of Silay, Philippines Leeches (Hirudo medicinalis) are invertebrates of the phylum Annelida whose main diet is blood. They are hermaphrodites and carnivorous, having 700 species that thrive in a variety of environments. Most of them are small, weighing less than 1–1.5 g before feeding, but some may reach a length of twelve centimeters.…
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Blood and pernicious anemia
Omar AlzarkaliBatavia, New York, United States Blood is powerful. The mere sight of it can cause an adult to fall to the ground; as a medical student, I have seen it happen. Faces go pale and legs can no longer carry their weight as they succumb to this primitive reflex. Perhaps this vasovagal response happens…