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Ali

@alidemiology

doing and learning

Toronto, Ontario Katılım Nisan 2026
39 Takip Edilen18 Takipçiler
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Monica Gandhi MD, MPH
Monica Gandhi MD, MPH@MonicaGandhi9·
HANTAVIRUS: Let's start with obvious. Global pandemics in 1918 (influenza) and 2020 (coronavirus) are from viruses easily spread by respiratory contact which is why flu/coronaviruses most of concern for pandemic potential. Hantavirus is an RNA virus in bunyavirus family, can be
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Ali@alidemiology·
Can’t stop looking at photos of my newborn nephew
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Ali@alidemiology·
Held him for an hour and didn’t feel the time pass at all
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Malik
Malik@Malikarred·
Sometimes you just wanna blow your fucking head off and save yourself the trouble. Then you remember you got shit that needs doing.
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Ali@alidemiology·
@AlKaneSH U told me about it broski
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Ali@alidemiology·
Traumatic memoirs of an Egyptian
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Ali@alidemiology·
Half the time? So what you would’ve expected by chance alone?
Anish Moonka@anishmoonka

Researchers in Stockholm put a woman's egg in a dish next to sperm from two men: her partner and a stranger. Half the time, the egg pulled in more sperm from the stranger than from the man she'd chosen. This was a 2020 study from Stockholm University and the University of Manchester, published in Proceedings of the Royal Society B. Until then, nobody had shown a human egg doing this. The fluid that surrounds an egg in a woman's body releases chemicals that act like a scent trail. Sperm follow the scent. The team put samples in thin glass tubes and counted how many sperm from each man swam in. All the eggs and sperm came from real couples going through IVF treatment. The pull was uneven. Eggs attracted 18 to 40 percent more sperm from one man over another, and inside the egg's fluid, sperm built up about 10 times more than in a plain comparison liquid. The team ran the experiment over and over, and the same pattern came out every time. The bigger finding came in who got picked. In half the cases, more sperm got pulled toward a stranger than toward her partner. The same sperm performed differently depending on which woman's fluid it was in. Sperm tails have a tiny gate on them. When the gate detects a hormone called progesterone (the same hormone tied to a woman's monthly cycle), it opens and the sperm kicks into a higher gear. Each woman's fluid has its own chemical mix, so different men's sperm respond differently. Some sperm get a strong push. Others barely react to the same fluid. Roughly 1 in 4 UK couples in fertility treatment have no idea why they can't have a baby. Every standard test comes back normal. If the egg and sperm reject each other chemically, no test catches it. The cycle fails. They get no answer, and they have to go through the entire thing again. In fertilization, the egg gets its own vote. The woman never feels it happen. Half the time in this study, that vote went to a stranger.

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Ali@alidemiology·
I’m so grateful that world donkey day is a thing. Keep my feed full of Burros
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Beau Sourire
Beau Sourire@Le_BeauSourire·
Hoy es el día de este noble animal tan olvidado y denostado pero que tanto bien ha hecho por la humanidad. Poco agradecimiento se le ha dado. Feliz día del burrito.
Beau Sourire tweet mediaBeau Sourire tweet mediaBeau Sourire tweet media
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Ali@alidemiology·
@afkaaruha Your hate against As*** people lives on
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