People have been getting tattoos for thousands of years, but we've never quite been sure why the ink sticks around under our skin. A group of researchers now think they might have the answer. Plus, scientists are on the road to making...

People have been getting tattoos for thousands of years, but we've never quite been sure why the ink sticks around under our skin. A group of researchers now think they might have the answer. Plus, scientists are on the road to making...

Your cells are coated with sugars that store information and speak a secret language. What are they trying to tell us? Your blood type, for one -- and, potentially, that you have cancer. Chemical biologist Carolyn Bertozzi researches how...

What if we could help our bodies heal faster and without scars, like Wolverine in X-Men? TED Fellow Kaitlyn Sadtler is working to make this dream a reality by developing new biomaterials that could change how our immune system responds...

Not everyone who is infected by a cold virus actually shows symptoms. In fact, people who seem to experience symptoms like a sore throat and stuffy nose more often may actually have more robust immune systems!

A lot of people react to certain compounds found in skincare products, and scientists may have figured out why these pesky rashes happen and how to prevent them. Meanwhile, a pair of papers published last week show how AI can be trained...

This video was made in partnership with the Swiss National Science Foundation. To see more videos about the importance of basic research, go to
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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...

Blood grouping is based on the presence of specific antigens—A, B, and H—on red blood cells, encoded by the ABO gene system. Individuals with blood type A have A antigens and anti-B antibodies, B has B antigens and anti-A antibodies, AB...

In this video, we explore the basic processes of positive selection and negative selection, which select competent lymphocytes that don't attack our own self-cells.

Baylor DPT Review session for Physiology (4-9-2020).<br/>
-Renal<br/> Physiol<br/>ogy
-GI P<br/>hysiology
-Blood and Immunity

In this video, we discuss the basic idea of clonal selection.

Apoptosis | The Extrinsic Pathway

Apoptosis and the Physiology of Caspases

We touched upon the inflammatory response in the Anatomy & Physiology series, but now it's time to go much deeper. What is inflammation on the cellular level? Which cell types are involved with the response, and what are the mechanisms...

This is the sixth practice problem set consisting of 17 Medical Terminology Practice Problems to help you bring together all the information you’ve learned from the Medical Terminology, The Basics lesson series, Anatomy lesson series,...

In this video, we explore the superficial skin layer, the epidermis. We will learn the structure and function of each of the layers [including stratum lucidum in thick skin].

Peroxisomes and Lysosomes: Intracellular Defense

Ok, we are ready to investigate the immune system! So where do we start? Rather than starting on the big objects, like the organs in the lymphatic system, the best way to dive in is to briefly discuss the different types of cells that...