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. Blood in the circulatory system is also known as peripheral blood, and the blood cells it carries, peripheral blood cells. Blood is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water, and contains proteins, glucose, mineral ions, hormones, carbon dioxide, and blood cells themselves. Albumin is the main protein in plasma, and it functions to regulate the colloidal osmotic pressure of blood. The blood cells are mainly red blood cells, white blood cells and platelets. The most abundant cells in vertebrate blood are red blood cells.

Read more in the app

“Liquid Biopsy” – Cost-Effective Early-Cancer Detection From Cell-Free DNA in Blood Samples

Frozen embryo transfers linked with high blood pressure risks in pregnancy

Green Tea Found To Improve Gut Health and Lower Blood Sugar

Discovery could power up platelet production to battle blood shortages

More older adults should be checking blood pressure at home, study suggests

Better Blood Sugar Control Could Reverse Diabetes-Related Brain Damage

Web of blood vessels helps protect whales’ brains while swimming

Study illuminates precancerous 'clonal outgrowth' in blood cells

This Fall: ‘Fireballs’ From Halley’s Comet, Once-In-A-Lifetime Planet Views And The Best ‘Blood Moon’ Eclipse Until 2029

Stopping aspirin when on a blood thinner lowers risk of bleeding, study finds

A smartphone's camera and flash could help people measure blood oxygen levels at home

Smartphones Could Help People Measure Blood Oxygen Levels at Home in a “Flash”

This Blood Stem Cell Research Could Change Medicine of the Future

In Photos: Comet Leonard, A ‘Blood Moon’ And ‘Winged Aurora’ Star In Annual Astronomy Photographer Of The Year

Horrifying: Commonly Used Agricultural Herbicide Can Cross the Blood-Brain Barrier

Combined birth control pill linked with increased risk of blood clots in obese women

The blood stem cell research that could change medicine of the future

Recommended blood sugar levels to avoid diabetes-related damage

Blood Type Linked to Risk of Stroke Before Age 60

In Photos: Jaw-Dropping ‘Blood Moon Rescue’ Among Winning Images In ‘Capture The Dark’ Contest