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Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Electron micrograph of phage T4 Electron micrograph of phage T4
A phage cross made by doubly infecting the host cell with parental phages A phage cross made by doubly infecting the host cell with parental phages
RNA Virus Life Cycle RNA Virus Life Cycle
(a) Varicella zoster virus recurring as shingles, a painful rash limited to an area enervated by 1 ... (a) Varicella zoster virus recurring as shingles, a painful rash limited to an area enervated by 1 ...
Integrative recombination in phage l: The site-specific recombination event Integrative recombination in phage l: The site-specific recombination event
Transcription of phage genes cro and cl Transcription of phage genes cro and cl
Video: Oral Hygiene & Braces Animation

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