Which type of biological safety cabinet has greater intake flow velocities and vents outside the building rather than back into the room?

A normal PR interval is between:

a. 0.8–1.0 seconds. b. .12–.20 seconds. c. 2.1–3.0 seconds. d. > 3.0 seconds.

Hematuria is abnormal unless it is a contamination from menses.

Answer the following statement true (T) or false (F)