Dopaminergic neurons are widely studied because of their role in one of the devastating diseases of old age, Parkinson’s. Lesioning studies using 6-hydroxydopamine or MPTP have been useful in research on Parkinson’s Disease. However, these reagents have limitations such as MPTP affecting catecholaminergic neurons and 6-OHDA stability and specificity issues. Targeting dopaminergic neurons with an

For the IB4-SAP (Cat. #IT-10) illustration (Figure 1), our thanks to Christopher N. Honda, Ph.D., Associate Professor, Department of Neuroscience, University ofMinnesota, 6-145 Jackson Hall, 321 Church Street, Minneapolis, MN 55455 This issue of our quarterly newsletter addresses the use of biotinylated materials in targeting. ATS is now offering a biotinylation service (see p. 7)

Contributed by William Truitt, PhD, Department of Cell Biology, Neurobiology, and Anatomy, Neuroscience Graduate Program, University of Cincinnati, College of Medicine, Post Office Box 670521, Cincinnati, OH 45267-0521, USA. Previously we demonstrated the existence of a spinothalamic pathway in the male rat where neural activation is specifically induced by ejaculation.1 This pathway includes the parvocellular