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Using a NaI(Tl) scintillation detector designed to operate in electrically noisy environments, we observed intense bursts of energetic radiation (>> 10 kiloelectron volts) during the dart leader phase of rocket-triggered lightning, just before and possibly at the very start of 31 out of the 37 return strokes measured. The bursts had typical durations of(More)
The neurogenic genes of Drosophila have long been known to regulate cell fate decisions in the developing ectoderm. In this paper we show that these genes also control mesoderm development. Embryonic cells that express the muscle-specific gene nautilus are overproduced in each of seven neurogenic mutants (Notch, Delta, Enhancer of split, big brain,(More)
The Drosophilia melanogaster alcohol dehydrogenase (Adh) gene is transcribed from two closely linked promoters, which are regulated by two upstream enhancers. The proximal promoter is active primarily in first to early third-instar larvae, whereas the distal promoter is active in late third-instar larvae and adults. The Adh larval enhancer and the proximal(More)
(1997) Detection of mRNAs encoding peroxisomal proteins by non-radioactive in situ hybridization with digoxigenin-labelled cRNAs. Target and signal amplification: approaches to increase the sensitivity of in situ hybridization. (1990) Expresson of type VI procollagen and prolyl 4-hydroxylase mRNA in carbon tetrachloride induced liver fibrosis studied by in(More)
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