Sure enough, the coprolite contained human myoglobin, a protein that transports oxygen in muscle cells and is found only in skeletal muscle and the heart.
(the coprolite; contained; human myoglobin) (a protein; transports; oxygen; L:in muscle cells) (a protein; is found; L:only in skeletal muscle and the heart)
the coprolite a protein a protein
contained transports is found
human myoglobin
oxygen L:in muscle cells
L:only in skeletal muscle and the heart