In this second special issue on signal transduction leading specialists
in their fields again present overviews of topics related to the highly
topicalsubject of signal transduction. The first contribution, by
Keppler, deals with the biosynthesis, transport, inactivation, and
analysis of leukotrienes. Mohr et al. present an excellent overview of
the biology of the peptide hormone oxytocin and its role in signal
transduction.The review by Holzer describes the significance of
peptinergic sensory neurons in the control of vascular functions. In the
contribution by Wolf etal the molecular biology of the Y chromosome is
discussed.