Cytology of degenerin-induced cell death in the PVM neuron David H. Hall, Guoqiang Gu+, Lei Gong#, Monica Driscoll#, and Martin Chalfie+, * Dept. Neuroscience, Albert Einstein College of Medicine, Bronx, N.Y. 10461 + Dept. Biological Sciences, Columbia University, New York, N.Y. 10027 # Dept. Molecular Biology and Biochemistry, Rutgers University, Piscataway, N.J. 08855
DIFFERENTIAL EFFECTS OF DAUER-DEFECTIVE MUTATIONS ON L1- SPECIFIC SURFACE ANTIGEN SWITCHING. David G. Grenache and Samuel M. Politz, Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA.
lin-36, a Class B Synthetic Multivulva Gene, Encodes a Novel Protein Jeffrey H. Thomas and H. Robert Horvitz, HHMI, Dept. Biology, MIT, Cambridge, MA 02139, USA
TWO TROPOMYOSINS EXPRBSSBD IN BODY WALL AND THE THIRD DID IN PHARYNX OF CAENORHABDDITIS ELEGANS. H. Imadzu, Y. Sakube and H. gagawa. Department of Biology, Faculty of Science, Okayama University, Okayama, 700 Japan.
Strain names for non-C. elegans species Scott W. Emmonst, Armand Leroit, and David Fitch, Department of Molecular Genetics, Albert Einstein College of Medicine, 1300 Morris Park Ave., Bronx, NY 10461, Department of Biology, New York University, RmlOO9 Main Bldg., Washington Square, New York, NY 10003
The Genome Structure and Expression of Promoter/lacZ Fusion Genes of the C. elegans Ryanodine Receptor Y. Sakube, H. Imadzu and H. Kagawa, Laboratory of Molecular Biology, Faculty of Science, Okayama University, Okayama, 700 Japan C51918@JPNKUDPC
Eggs isolated by the method using hyperchlorite were irradiated with X-rays after incubation for various times. The hatched worms were grown on agar plates with E. coli as food and survivors were scored for the animals reaching adulthood at 3 days after irradiation. The eggs at 2 h after egg collection were most sensitive and the D37 (dose corresponding to 37% survival) was 500 rads. The D37 of the eggs at 0, 2 and 3 h were 900, 750 and 700 rads, respectively and at 4 to 11 h were in the range from 5,000 to 8.000 rads. The eggs at 2 h was constituted of 100 to 350 cells; the number corresponding to that for the eggs of Rhabditidae tokai at 5 h, the most sensitive stage. The results showed that the eggs during the first half of embryogenesis (the stage of cell division) is about ten times more sensitive to X-irradiation than the eggs during the second half (the stage of morphogenesis). It was assumed that X-rays might influence not only cell division but also cell-cell-interactions.