The scientists studied how vasopressin and oxytocin hormones change in rats without adrenal glands when they face stress. They found that after removing the adrenal glands, the rats had high oxytocin levels at rest and even higher after stress. The stress response in these rats remained different from normal rats that had adrenal glands. The vasopressin hormone did not play a big role in stress response for rats without adrenal glands. However, oxytocin may help in triggering stress response during short-term adrenal gland removal. This shows that without adrenal glands, the hormone balance in the body changes, affecting the way the body responds to stress.