« previous next »
« previous next »
 

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Theiler Staging Criteria for Mouse Embryo Development Theiler Staging Criteria for Mouse Embryo Development
One danger of a wire fence is that, as shown in this photo, it is practically invisible; a running a One danger of a wire fence is that, as shown in this photo, it is practically invisible; a running a
Criteria for Hospitalization for Feeding and Eating Disorders Criteria for Hospitalization for Feeding and Eating Disorders
DSM-5 Criteria for Substance Use Disorder DSM-5 Criteria for Substance Use Disorder
PMDD Diagnostic Criteria from the American Psychiatric Association PMDD Diagnostic Criteria from the American Psychiatric Association
Staging Criteria for ONJ Staging Criteria for ONJ
Video: How to make cDNA Animation

For a complete list of videos, visit our video library