« previous next »
« previous next »
 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Antibody techniques. (b) An ELISA to test for the presence of herpes simplex virus (HSV Antibody techniques. (b) An ELISA to test for the presence of herpes simplex virus (HSV
Influenza virus. Influenza virus.
Types of pathogenic organisms: (a) bacterium, (b) virus, (c) protozoan pathogens, (d) multicellular ... Types of pathogenic organisms: (a) bacterium, (b) virus, (c) protozoan pathogens, (d) multicellular ...
Aedes mosquito, the vector for West Nile virus encephalitis. Aedes mosquito, the vector for West Nile virus encephalitis.
Human immunodeficiency virus (HIV) micrograph Human immunodeficiency virus (HIV) micrograph
The structure of the influenza virus The structure of the influenza virus
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library