Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.

In this video we take a look at our bodies defences against pathogens. Including the physical and chemicals barriers, and our immune system.

We've covered macrophages and dendritic cells, so let's move on to neutrophils. These are the most abundant white blood cells, and they act as the first line of defense in innate immunity. How do they form, and what do they do...

Before we move on from the innate immune system, let's go through all the cell types one by one, so that we can better understand them. Let's start with macrophages, which are long-lived phagocytic cells. They play a pivotal role in...

With the basic functions of immune cells covered, we are now ready to go through all the different types of immune cells, and talk a little bit about what they all do. Again, each type will get its own tutorial later in the series, but...

In this video, we explore the functions of neutrophils, macrophages, and dendritic cells.<br/>

In this video, we look at the function of antigen-presenting cells (APCs): antigen presentation.

Complement Anaphylatoxins (C5a, C3a, C4a)

White blood cells, a.k.a. Leukocytes. These are the second most common cell type in the blood. But what do we know about their structure and what exactly do they do? Well, that’s what we cover in this video.

The immune system is a pretty complex system that includes a number of different cell types and organs. Their function is to basically block, destroy or at least neutralize any harmful substances that could enter the body....

Cell Structure and Function Set: 9. This clip looks at the roles of vacuoles in cells.

This live-action video program is about white blood cells. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful, animated...

Peroxisomes and Lysosomes: Intracellular Defense

This live-action video program is about the avian digestive system. The program is designed to reinforce and support a student's comprehension and retention of the term through use of video footage, photographs, diagrams and colorful,...

In 1896, a mysterious disease spread through the Snake River Valley of Idaho. Some people called it a spotted fever, and hundreds got sick. As it turns out, this was all the doing of some bacteria, Rickettsia ricketssii. Let's get a...

Animation of macrophage or lymphocyte chasing and killing bacteria

White blood cells defend the body by leaving the blood stream in order to engulf and destroy deadly anthrax bacteria in a process called phagocytosis.

ECU T/L Shot of amoeba crawling on surface of microscope slide searching for prey

ECU Shot of amoeba crawling on surface of microscope slide searching for prey / Newcastle Emlyn, Ceredigion, United Kingdom

CU microscopic view of white blood cell, Neutrophyll, engulfs bacteria, Phagocytosis