What contribution did Jonas Salk make to science in the 1950s?

Biology

2 answers:

victus00 [196]3 years ago

8 0

He basically made the first safe and effective vaccine for the disease Polio

Sergio039 [100]3 years ago

4 0

Jonas Salk made the Polio vaccine.

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Do you mean planets?

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Abnormally the slow depolarization of the ventricles would most likely change the shape of the QRS in an ECG tracing. It is a combination of three graphical deflections which is seen on a typical electrocardiogram. It is the most visually obvious and central part of the tracing. It corresponds to depolarization of left and right ventricles of the human heart.
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