mean ( +/- sem ) serum concentration of t4 was greater in small ( 2.45 +/- 0.06 micrograms/dl ) - than in medium ( 1.94 +/- 0.04 micrograms/dl ) - or large ( 2.03 +/- 0.03 micrograms/dl ) -breed dogs , the same in females ( 2.11 +/- 0.04 micrograms/dl ) and males ( 2.08 +/- 0.04 micrograms/dl ) , and greater in nursing pups ( 3.04 +/- 0.05 micrograms/dl ) than in weanling pups ( 1.94 +/- 0.05 micrograms/dl ) , rapidly growing dogs ( 1.95 +/- 0.04 micrograms/dl ) , and young adult ( 1.90 +/- 0.06 micrograms/dl ) , middle-aged adult ( 1.72 +/- 0.05 micrograms/dl ) , or old adult ( 1.50 +/- 0.05 micrograms/dl ) dogs .
C0683973
middle-aged adult
C0001675
adult