My mom, U penn med school 1937. My wife. Hopkins MD 1986.
Three Goblin Art

titsay

oozey mess

PR's Tumblrdome
Monterey Bay Aquarium

祝日 / Permanent Vacation
🪼
2025 on Tumblr: Trends That Defined the Year
wallacepolsom

blake kathryn
Jules of Nature

Love Begins
let's talk about Bridgerton tea, my ask is open
todays bird

tannertan36
he wasn't even looking at me and he found me

Andulka

Janaina Medeiros
DEAR READER
Show & Tell
seen from Oman
seen from United States

seen from South Africa

seen from Netherlands

seen from Malaysia
seen from United States

seen from Türkiye

seen from Azerbaijan
seen from United Kingdom
seen from Netherlands

seen from United States
seen from Colombia

seen from Brazil

seen from South Africa
seen from United States
seen from United States
seen from United States
seen from United States

seen from United States
seen from Saudi Arabia
@ar-uri-guy
My mom, U penn med school 1937. My wife. Hopkins MD 1986.
Nice 👍
Killer tits
(via robertocrc76, robertocrc76, jabman64)
Nice 👍
(via holysheet68)
🦊 https://angelesgorgeous.tumblr.com//🦊26072021
This is what a man’s ejaculation feels like...
Compound Isolated From Human Sperm Could Treat Genetic Disorder
A genetic disorder caused by protein synthesis that results in learning and developmental difficulties can be treated by spermidine, a compound isolated from human sperm.
We have to be good for something...
academic twitter explained
Shorten sentences!
Short sentences
Shorts...
Sound bytes
anime_irl
My wife, upon meeting me...
A Visual Guide to the SARS-CoV-2 Coronavirus
Illustrations by Veronica Falconieri Hays (Scientific American)
What scientists know about the inner workings of the pathogen that has infected the world
For all the mysteries that remain about the novel coronavirus and the COVID-19 disease it causes, scientists have generated an incredible amount of fine-grained knowledge in a surprisingly short time.
Thousands of different coronaviruses may inhabit the planet. Four of them are responsible for many of our common colds. Two others have already triggered alarming outbreaks of disease: in 2002 a coronavirus caused severe acute respiratory syndrome (SARS), which killed more than 770 people worldwide, and in 2012 a different strain started Middle East respiratory syndrome (MERS), taking more than 800 lives. SARS burned out within a year; MERS still lingers.
The newest coronavirus, SARS-CoV-2, has created a far deadlier pandemic in part because once it infects a person it can lie undetected for a long time. An individual who had the SARS coronavirus did not transmit it until 24 to 36 hours after displaying symptoms such as fever and dry cough; people feeling ill could be isolated before they made others sick. But people with COVID-19 can transmit the virus before they show clear symptoms. Not feeling ill, infected men and women work, commute, shop, eat out and attend parties, all the while exhaling coronavirus into the airspace of people around them. The virus can remain undetected inside the human body for so long partly because its genome produces proteins that delay our immune system from sounding an alarm. Meanwhile lung cells die as the virus secretly reproduces. When the immune system does hear the call, it can go into overdrive, suffocating the very cells it is trying to save.
In the graphics that follow, Scientific American presents detailed explanations, current as of mid-June, into how SARS-CoV-2 sneaks inside human cells, makes copies of itself and bursts out to infiltrate many more cells, widening infection. It shows how the immune system would normally attempt to neutralize virus particles and how CoV-2 can block that effort. It explain some of the virus’s surprising abilities, such as its capacity to proofread new virus copies as they are being made to prevent mutations that could destroy them. And it shows how drugs and vaccines might still be able to overcome the intruders.
Virus invasion and immune response
A SARS-CoV-2 particle enters a person’s nose or mouth and floats in the airway until it brushes against a lung cell that has an ACE2 receptor on the surface. The virus binds to that cell, slips inside and uses the cell’s machinery to help make copies of itself. They break out, leaving the cell for dead, and penetrate other cells. Infected cells send out alarms to the immune system to try to neutralize or destroy the pathogens, but the viruses can prevent or intercept the signals, buying time to replicate widely before a person shows symptoms.
Drug and vaccine intervention
Commercial and university labs are investigating well over 100 drugs to fight COVID-19, the disease the SARS-CoV-2 virus causes. Most drugs would not destroy the virus directly but would interfere with it enough to allow the body’s immune system to clear the infection. Antiviral drugs generally stop a virus from attaching to a lung cell, prevent a virus from reproducing if it does invade a cell, or dampen an overreaction by the immune system, which can cause severe symptoms in infected people. Vaccines prepare the immune system to quickly and effectively fight a future infection.
The remarkable and mysterious Coronavirus genome
The SARS-CoV-2 genome is a strand of RNA that is about 29,900 bases long—near the limit for RNA viruses. Influenza has about 13,500 bases, and the rhinoviruses that cause common colds have about 8,000. (A base is a pair of compounds that are the building blocks of RNA and DNA.) Because the genome is so large, many mutations could occur during replication that would cripple the virus, but SARS-CoV-2 can proofread and correct copies. This quality control is common in human cells and in DNA viruses but highly unusual in RNA viruses. The long genome also has accessory genes, not fully understood, some of which may help it fend off our immune system.
This article was originally published with the title “Inside the Coronavirus” in Scientific American 323, 1, 32-37 (July 2020). doi:10.1038/scientificamerican0720-32
Source: By Mark Fischetti, Veronica Falconieri Hays, Britt Glaunsinger, Jen Christiansen | Scientific American July 2020 Issue
Danya Sherman, a university student, invented “KnoNap,” a napkin capable of identifying 26 of the 40 most commonly used “date rape” drugs. She became aware about the issue when she was assaulted by a “friend” using one such drug.
Comparative constructions
Ex: “My father is older than my mother”.
Types: 1. Locative comparatives: “From my mother, my father is old” - a movement pre/postposition or case like “from, to, at, on, for”. 2. Exceed comparatives: “My father old exceed my mother” - a verb meaning “to exceed” or “to surpass”. 3. Conjoined comparative: “My father old, my mother young” - two clauses, with antonyms or a negation of the opposite, or just justaposition of the terms. 4. Particle comparative: “My father is older than my mother” - particle “than” with or without a marker on the adjective.
Source: https://wals.info/chapter/121
Dust, stars, and cosmic rays swirling around Comet 67P/Churyumov–Gerasimenko, captured by the Rosetta probe. (Source)
*kicks the front door in* DO YOU SEE HOW GODDAMN FUCKING COOL THIS SHIT IS
WE HAVE VIDEO. FROM THE SURFACE OF A COMET. SENT BY A ROBOT.
ROSETTA PROBE YOU’RE AMAZING WE LOVE YOU
That cliff is a kilometer high. is Here’s what you’re actually looking at:
THANK YOU
i was wondering
Not only is this shit cool as hell but you gotta realize how unbelievably remarkable of a task this is and how hard it was to pull off.
Humans managed to send a tiny hunk of metal stuffed with electronics millions and millions and millions of miles away through this hostile, airless envionent to land (without breaking it!) on the equivalent of a dirty snowball shooting though outer space
That’s like shooting a bullet from LA to London and hitting a moving target that’s only one foot across, and having the bullet survive the ordeal unscathed.
Plus! We humans developed a way to videotape and transmit pictures from this snowball in space so we know what it’s like to stand the surface.
I mean, is that not mind blowingly amazing???
Neuroscience shows that people can’t actually read and listen at the same time so including too much text on a PowerPoint slide is useless.
This is why I teach my students, “One idea per screen, every screen gets a picture” How much is the cost of one more screen in PowerPoint? Zero!
Flee from the Mount Stupid, always!
SMBC
Seven wonders of the Ancient World restored in their prime
Iron Man (2008) was rushed into production to make its release date, and it had no script. “They had no script, man. They had an outline.” Jeff Bridges described the improvised production of the film as being “saved by the improv prowess of the film’s director (Jon Favreau) and star (Robert Downey Jr.)”