Calyx of Held nervous system has allowed for direct research within a mammalian model and the large size increases the ease of electrophysiological recording. For these reasons it has been popular in understanding transmitter release. Specifically, the calyx of Held is used because of: Calyx of Held The Calyx of Held is a particularly large synapse in the mammalian auditory central nervous system, so named by Hans Held in his 1893 article "Die centrale Gehörleitung" because of its resemblance to the calyx of a flower. Globular bushy cells in the anteroventral cochlear nucleus (AVCN) send axons to the contralateral medial nucleus of the
Botany 2000 the newsletter, the UNESCO Botany 2000-Asia program sponsors occasional workshops on the taxonomy, ethnobotany and chemistry of various plant families, as well as training courses in herbarium techniques and curation. Botany 2000-Africa is implemented by UNESCO's Nairobi Office and deals with the conservation and use of the medicinal flora of Africa. Some of the activities of the Botany 2000-Africa program are published in: S. Edwards and Z. Asfaw (Editors): "The Status of Some Plant Resources in Parts of Tropical Africa". Botany 2000: East and Central Africa; NAPRECA Monograph Series No. 2. Published by "Natural Products Research Network for Eastern and