alejandra manjarrez

Alejandra Manjarrez

Alejandra Manjarrez is a freelance science journalist who contributes to The Scientist. She has a PhD in systems biology from ETH Zurich and a master’s in molecular biology from Utrecht University. After years studying bacteria in a lab, she now spends most of her days reading, writing, and hunting science stories, either while traveling or visiting random libraries around the world. Her work has also appeared in Hakai, The Atlantic, and Lab Times.

Articles by Alejandra Manjarrez
Group of cells stained in either blue or green in a black background.
Diabetes Marker Linked to COVID-19 Severity in Mice
Alejandra Manjarrez | May 16, 2022
A sugar that’s less abundant in the blood of people with diabetes binds to SARS-CoV-2’s spike protein and disrupts the virus’s ability to fuse with cells.  
Senior woman wearing a grey pullover sitting on a bed and holding her back.
Early Inflammation Protects Against Chronic Pain, Study Finds
Alejandra Manjarrez | May 12, 2022
Human data and experiments in mice challenge the common use of anti-inflammatory drugs to treat pain.
stained microscope image of a germinal center inside a lymph node
Booster Is Best in the Same Limb as Initial Vaccine: Mouse Study
Alejandra Manjarrez | May 6, 2022
Compared to mice who got the doses in separate limbs, animals receiving flu shots in the same paw for both a first and second dose had better-trained memory B cells that bound tighter to the vaccine antigen.
Ramified cells in a lilac background
Could Vitamin Supplementation Help Alzheimer’s Patients?
Alejandra Manjarrez | Apr 11, 2022
Niacin, a form of vitamin B3 used to treat cardiovascular disease, helps immune cells in the brain fight neurodegenerative diseases such as Alzheimer’s in mice models, according to recent studies. Researchers hope that human clinical trials will swiftly follow.
Pink rat pups piled on top of each other.
Rat Sperm Generated from Stem Cells
Alejandra Manjarrez | Apr 7, 2022
Researchers report they were able to make functional sperm in a dish, a feat previously only possible for mice.
Yellow and black caterpillar crawling on a leaf in a green background
Virus Alters Caterpillars’ Vision to Trick Them into Climbing
Alejandra Manjarrez | Mar 25, 2022
A study finds that a baculovirus that infects cotton bollworm larvae changes the expression of genes involved in light perception, driving them to seek heights that could favor viral transmission.
Diffuse star-like shapes with regions in purple, green, and both colors overlapped.
Tumor Cells on Brink of Death May Trigger Metastasis
Alejandra Manjarrez | Mar 25, 2022
A new study reports that human colon cancer cells at imminent risk of death can instead develop characteristics needed to colonize new parts of the body.
Seagrass underwater on a sandy seabed.
Seagrasses Continue to Emit Methane Decades After Death
Alejandra Manjarrez | Feb 22, 2022
Methane production, likely achieved by a diverse group of methanogenic archaea, occurs at similar rates in both alive and dead seagrasses, a study reports. The findings highlight the potential environmental impact of seagrasses declining globally.
Woman waiting in line at the airport, carrying a bag and standing next to two other suitcases. She is wearing a N95 face mask.
SARS-CoV-2 in the Air: What’s Known and What Isn’t
Alejandra Manjarrez | Feb 18, 2022
Evidence suggests that COVID-19 is primarily an airborne disease. Yet the details of how transmission occurs are still debated and frequently misunderstood.
Scientific illustration of a migrating breast cancer cell.
Breast Cancer Cells Churn Out Cholesterol to Fuel Metastasis
Alejandra Manjarrez | Feb 4, 2022
A study uncovers a novel connection between the biomolecule and cancer progression.