For nouns ending in in -s, you add only the apostrophe when the noun is…

The Nurses’ Health Study is a continuing research study that began in 1976. Nurses who agreed to participate complete a Likert-style survey every two years to better understand the relationship between chronic disease and variables such as diet, exercise, smoking, occupational exposures, and hormone use.  The Nurses’ Health Study would be described as a/an _________________________ study.

Define external validity and internal validity. (2) What is the relationship between external validity and random selection? (1) Describe 4 threats to internal validity. (2)

A confused 52-year-old female has an eight-inch full thickness laceration diagonally across her right thigh. Her skin is pale and diaphoretic, and you observe a steady flow of dark red blood from the wound onto the carpeted floor. The carpet under her leg is saturated. You should suspect:

A 32-year-old female complains of a throbbing right-sided headache. She tells you the lights are bothering her eyes and she feels nauseated. Her face is symmetrical, and both arms move equally. Her speech is clear, and she uses appropriate words. You should suspect a:

SV40 will only transform cells which are permissive for productive viral infection.

Which enzyme transcribes the polyomavirus genes?

Polyomaviruses are a major infectious cause of human lung cancers.

polyomavirus genes are organized into how many transcription units?

The small T antigen of SV40 binds to protein phosphatase 2A (PP2A) and inactivates PP2A. Why is inactivation of PP2A beneficial to the virus?