470 Extracardiac endothelium patterns embryonic coronary arterio-venous connections JM. Perez-Pomares1; E. Cano2; R. Carmona1; A. Ruiz-Villalba3; A. Rojas4; Y-Y. Chau5; KD. Wagner6; N. Wagner6; ND. Hastie5; R. Munoz-Chapuli1 University of Málaga, Málaga, Spain; Max Delbruck Center for Molecular Medicine, Berlin, Germany; University of Navarra, Pamplona, Spain; Centro Andaluz de Biologı́a Molecul...

Mday, M arch 24 transmission system was 20 Gb/s, while the symbol rate was 10 Gbaud (=10 GS/s). The second MZ modulator was used as a pulse carver to generate RZ-DQPSK signals. For the 20-Gb/s DQPSK receivers, two 100-ps DIs with two separate balanced receivers are generally required to simultaneously demodulate the two 10-Gb/s data streams contained in the 10-Gbaud DQPSK signal [4]. However, w...

a-tocopheryl succinate 1224 a-trinositol 833 ABCG2 1276 acoustic neuroma 1654 acquired resistance 383 actomyosin contractility 392 ADCC 520 adenocarcinoma 1692 adenoma 765 adenovirus 796 adipocytes 403 adipose tissue 1541 AdnaTest 276 advanced breast cancer 1341 advanced disease 1687 advanced gastric cancer 475 advanced oesophageal cancer 475 adverse events 80 AEE788 1235 AFP 748 Africa 957 Afr...

The procedure used to determine polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs), chlorinated dibenzodioxins, and chlorinated dibenzofurans is outlined in Table 1. It is based on the cleanup-chromatography of Holden and Marsden (1), modified as described (2). Most PCBs are eluted in fraction I. Fraction II contains some PCBs, p ,p'-DDE, and PCTs, whereas heptachlor exposide, ...

A new volatile derivative of taurine, N-isobutoxycarbonyltaurine methyl ester (methyl 2-(N-isobutoxycarbonylamino)ethanesulfonate), was prepared by a three-step procedure for the gas chromatographic determination of taurine in urine. First, taurine was converted to its silver salt by reaction with silver oxide; next the silver salt was reacted with isobutyl chloroformate to form the N-isobutoxy...

Sir,—It was interesting to read that Drs Jones, Molloy and Rosen used a similar injection technique to ours for analysis of volatile anaesthetics in whole blood (Brit. J. Anaesth. (1972), 44, 124). We have found pretreatment of blood samples to be unnecessary if glass liners are used in the injection port, columns are made of liquid methyl silicone (OV101) and the solid support is Chromosorb W ...

In response to an appropriate stimulus such as phagocytosis of an opsonized particle, macrophages reduce oxygen, first to superoxide anion (O2-), 1 and then to hydrogen peroxide (H202) (1, 2). These metabolites of oxygen are involved in the killing of phagocytosed microorganisms (3). More recently, H202 has also been implicated in macrophage killing of lymphocyte tumor lines (4, 5). Macrophages...