In one of the only known photos of Abraham Lincoln taken on the day of the Gettysburg Address, Lincoln can be seen seated, hatless, just below and to the right of the flag. Lincoln began developing symptoms of smallpox on the train home to Washington, DC.
Presidential Pox, 1863
Researchers continue to debate whether US president Abraham Lincoln was coming down with smallpox as he delivered his famous Gettysburg Address, and if he had been immunized.
ABOVE: © LIBRARY OF CONGRESS
Presidential Pox, 1863
Presidential Pox, 1863

Researchers continue to debate whether US president Abraham Lincoln was coming down with smallpox as he delivered his famous Gettysburg Address, and if he had been immunized.

Researchers continue to debate whether US president Abraham Lincoln was coming down with smallpox as he delivered his famous Gettysburg Address, and if he had been immunized.

ABOVE: © LIBRARY OF CONGRESS
disease & medicine
Red blood cells are pictured in grayscale on a gray background
Red Blood Cells Activate Innate Immune System
Abby Olena | Oct 20, 2021
Researchers link the ability of the cells to bind and present DNA from pathogens and cell death to anemia, which is common in COVID-19, and immune activation.
illustration of a coronavirus and antibodies
When the Immune Response Makes COVID-19 Worse
Alejandra Manjarrez | Sep 27, 2021
If the immune system makes mistakes—reacting late or getting the target wrong—it can amplify the damage wrought by SARS-CoV-2.
Watercolor coronaviruses in green, red, blue, and purple are layered above an abstract background of watercolor swashes
Plenty of Evidence for Recombination in SARS-CoV-2
Abby Olena | Sep 2, 2021
Different variants of the virus behind the COVID-19 pandemic are swapping chunks of genetic material, but it’s not yet clear what implications that may have for public health.
Illustration showing the bodily systems affected by Long COVID
Infographic: Bodily Systems Affected by Long COVID
Sruthi S. Balakrishnan | Sep 1, 2021
Symptoms documented in cases of long COVID are wide ranging and variable.
Human blood in a plastic Intravenous drip bag, the tube running out of the image. Square crop. Horizontal with copy space.
Opinion: What the History of Blood Transfusion Reveals About Risk
Paul A. Offit | Sep 1, 2021
Every medical intervention—even one with a centuries-long history—brings dangers, some of which become clear only later.
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Mechanisms of Long COVID Remain Unknown but Data Are Rolling In
Sruthi S. Balakrishnan | Sep 1, 2021
A year and a half into the pandemic, the long-term effects of SARS-CoV-2 infection are garnering more research attention as millions of long COVID patients emerge.
Red blood vessels that decrease in diameter as they radiate outward are pictured on a pink and white surface
Antisense Oligonucleotides Cross Rodents’ Blood-Brain Barrier
Abby Olena | Aug 18, 2021
RNA-DNA complexes that were modified with cholesterol made it into the brains of rats and mice, where they knocked down target genes.
ribbon model of phenylalanine hydroxylase enzyme
Noncoding RNA Improves Symptoms in Mice with Metabolic Disorder
Abby Olena | Aug 6, 2021
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Opinion: Treating Infertility as a Disease
Kate O'Neill | Aug 1, 2021
For too long, a physiological inability to conceive or carry a child through to birth has been seen as a minor medical issue.
A New View of My Own Past
Jef Akst | Aug 1, 2021
Hearing others’ perspectives on infertility and pregnancy has me reconsidering my own reproductive journey.
A collection of headshots
Contributors
The Scientist Staff | Aug 1, 2021
Meet some of the people featured in the August 2021 issue of The Scientist.
micrograph showing red aggregating protein in mouse neurons
Citing Safety, French Institutions Temporarily Halt Prion Research
Annie Melchor | Jul 28, 2021
The three-month moratorium comes after a former prion researcher was diagnosed with Creutzfeldt-Jakob disease.
Q8W3K0, listed in the DeepMind database as a potential plant disease resistance protein from Arabidopsis thaliana
Predictions of Most Human Protein Structures Made Freely Available
Lisa Winter | Jul 23, 2021
The AlphaFold program from AI firm DeepMind has amassed a huge database of protein structures from humans and model organisms.