Assessing therapeutic physical activity effectiveness in restoring function in rats with traumatic neuropathies; Identifying chemokine receptors in cultured rat brain cells; Assessing in rats, relationships in thyroid hormone receptor and corticosterone receptor expression and the regenerating sciatic nerve (correlated with age and gender); Assessing in mice, lithium as a potential neuroprotective therapeutic agent for spatial memory diseases, as well as its potential in enhancing learning.