progressive exophthalmos , measured from photographs and expressed as a ratio of intercorneal distance to intersupraorbital ridge distance , was produced in male guinea pigs when thyroid status was altered either by surgical thyroidectomy supplemented with 131-i treatment or by the administration of 6-propyl-2 thiouracil ( 0.1 % in chow ) .
C0040132
thyroid
C0040145
thyroidectomy