'This gland makes its hormones by combining iodine with the amino acid tyrosine'
a thyroid
IN THE NECK: This gland makes its hormones by combining iodine with the amino acid tyrosine
This gland makes its hormones by combining iodine with the amino acid tyrosine
This gland makes its hormones by combining iodine with the amino acid tyrosine
IN THE NECK
a thyroid
IN THE NECK