Where is the answers to pick from?
Answer:
More sequences are conserved between rabbits and humans than between humans and mice.
Explanation:
That's the reason experimental trial of drugs or vaccines are first tested on rabbits.
Answer:
Focal
Explanation:
caused by the dissemination of microorganisms or toxic products from a focus of infection.
I think the correct answer would be the left atrium. Mitral valve stenosis is the narrowing of the mitral valve in the heart. This valve does not properly open which blocks the flow of blood into the left atrium. Hope this answers the question.