Researchers have revealed a potentially life-saving rapid blood type test, and does using GPS to get around make your brain lazy?

Arthritis and injury grind down millions of joints, but few get the best remedy -- real biological tissue. Kevin Stone shows a treatment that could sidestep the high costs and donor shortfall of human-to-human transplants with a novel...

From A positive to O negative, everyone's born with a blood type, and they're stuck with that blood type for their whole lives... or are they?

You may have heard a lot of talk about antibodies lately, especially in relation to vaccines. We wanted to tackle this important subject, but these tiny objects are deceptively complex! So, this is the first of three episodes in a...

THE FINAL SHOWDOWN! This is the last episode on the immune system and also the very last episode of Crash Course Anatomy & Physiology. In it, Hank explains how the cellular immune response uses helper, cytotoxic, and regulatory T...

The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does...

You’re probably aware that your blood can be A, B, AB or O, but it turns out that blood types can get a lot more complicated than that!

Quick Questions explains why, when it comes right down to it, there are really only eight kinds of people in the world.

Paul Andersen explains how your body protects itself from invading viruses and bacteria. He starts by describing the nonspecific immune responses of skin and inflammation. He then explains how we use antibodies to disrupt the function...

In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells,...

Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself. We'll start by outlining the basic components of blood -- including erythrocytes, leukocytes, platelets, and plasma...

Blood banks need a constant supply of donors to maintain their supply, but some enzymes that are already in our bodies might be able to help!

Blood grouping is based on the presence of A and B antigens on red blood cells and their corresponding antibodies in the serum. Blood type A has A antigen and anti-B antibodies; type B has B antigen and anti-A; type AB has both antigens...

The Major Histocompatibility Complex (MHC) is a tightly linked gene cluster encoding cell surface molecules essential for antigen presentation and graft rejection, known as histocompatibility antigens. In humans (HLA on chromosome 6),...

The Rh factor is a protein found on red blood cells; individuals with it are Rh positive, while those without are Rh negative, and it is inherited genetically. Rh incompatibility occurs during pregnancy if an Rh-negative mother carries...

Practice life sciences questions using real examples from 2012.

The ABO gene on chromosome 9 encodes enzymes that determine an individual’s blood group by modifying the H antigen into A or B antigens via glycosyltransferases. The A allele produces an enzyme that adds N-acetylgalactosamine (GalNAc),...

This video provides information on organ donation and transplantation. It highlights the potential impact of organ donation, including saving up to 8 lives through organ donation and improving the lives of 75 others through skin and...

There are many things to keep in mind when choosing your life partner. One such thing is the blood group. We don’t think of this at first, but differences in blood groups can lead to complications. More specifically, these problems can...

Since vaccination was discovered in 1769 by Edward Jenner, it has come to become an indispensable part of healthcare. Over the last 50 years, advances in science and technology have allowed us to develop vaccines to diseases at breakneck...

The immune system (or immunity) can be divided into two types - innate and adaptive immunity. This video has an immune system animation. The innate immune system consists of defenses against infection that are activated instantly as a...

A molecule or fragment of a molecule that triggers an immune response, causing the body to produce specific antibodies against it.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds...

Antibodies combat some of the strongest foreign invaders that enter your body. What are antibodies and how do they work? Biology - Cells And DNA - Learning Points. Whenever a germ or infection enters our body, white blood cells,...

After a rigorous examination of all the components of the innate system, it's finally time to pivot over to the adaptive immune system. If you thought innate immunity was impressive, get ready to be amazed! Adaptive immunity is one of...