Aprotein signature is:
the path followed by a protein after it is synthesized in the nucleus
the path followed by a protein in the cytoplasm
a protein expressed on the cell surface
a unique set of proteins present in a diseased state

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

your answer is "the 1950's"

i think that c)gold was found there

but i am not sure

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!