Examlex
What are the mass number A and the charge (in units of e) for each of the following
particles or rays?
(a) beta-plus
(b) beta-minus
(c) gamma ray
Whooping Cough
An infectious bacterial disease that causes uncontrollable, violent coughing which can make it hard to breathe; also known as pertussis.
Pertussis
A highly contagious respiratory infection also known as whooping cough, caused by the bacterium Bordetella pertussis.
Viral Conjunctivitis
An eye infection caused by a virus resulting in redness, itching, and watering of the eyes.
Incubation Period
The time interval between the entry of an infectious agent into the body and the appearance of the first symptoms of the disease.
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