Blood

Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells.

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Veterans under 40 years old have more 'forever chemicals' in their blood than other Americans their age

A Common Virus Shows Signs of Reactivating Up to 3 Months Before a Multiple Sclerosis Attack

Simple Blood Test Could Flag Your Memory Problems 6 Years Before They Start

Your Blood May Predict How Well a Vaccine Will Work

A Man Went to Hospital With Blood in His Urine. Doctors Found a Needle in His Heart.

AI-Designed Drug Makes Patients' Blood Look Biologically Younger, Study Shows

Blood and gene test combo forecasts Alzheimer’s symptoms years before onset

Protein clues in the blood may help children avoid diseases later in life

Drug-delivering particles aim to breach the blood–brain barrier

A mosquito’s blood-sucking organ, turned 3D-printing nozzle, wins an Ig Nobel (Researchers who repurposed the mosquito proboscis to create a high-resolution and sustainable nozzle for 3D printing have won the 2026 Ig Nobel Technology Prize.)

Advanced optical imaging reveals hidden activity in blood immune cells

Whole blood as a new source for clinical biomarker discovery

How To Photograph Tonight’s ‘Blood Moon’ Eclipse And Northern Lights

Where And When To See Tonight’s ‘Blood Moon’ Lunar Eclipse From Every U.S. State

Biological changes in firefighters’ urine and blood seen 24 hours after fighting a fire

Blood-camouflaged liquid metal nanoparticles defeat the most aggressive breast cancer

Female clones created from the blood of male mice

Patient-specific "blood–brain tumor barrier chip" predicts how glioblastoma patients will respond to treatment