The _____________ route is not a portal route of entry of a pathogen per se, but rather a way of circumventing the usual portals.

The _____________ route is not a portal route of entry of a pathogen per se, but rather a way of circumventing the usual portals.

Answer: parenteral

The study of the cause of the and where disease occur is known as ___________.

The study of the cause of the and where disease occur is known as ___________.

Answer: epidemiology

In 2% of pregnancies, pathogens cross the _______ and infect the embryo or fetus.

In 2% of pregnancies, pathogens cross the _______ and infect the embryo or fetus.

Answer: placenta

The study of the cause of disease is known as ______________.

The study of the cause of disease is known as ______________.

Answer: etiology