a Developmental fate of different cell populations in chimaeras. Mus niusculus (Rodentia) 



WEST, M. R.; B.Sc. - Muse. Dystrophy Res. Labs., Newcastle Gen. Hosp., NEWCASTLE upon Tyne 



NE4 6BE, England 

 a Reaction of normal and dystrophic adult muscle, cultured with newborn or fetal tissues: 



induction and early morphological changes. Mus musculus (Rodentia) 

 WESTIN, Mrs. M.; Ph.D. - Dept. of Immunol., Wenner-Gren Inst, for Exp. Biol., Pack, 104 05 



STOCKHOLM 50, Sweden 

 a Immunological study of individual embryonic proteins, their gene dependence, function, locaUza- 



tion, and appearance in different developmental stages. Paracentrotus lividus (Echinoidea) 

 WESTRA, A.; Ph.D. - Zool. Lab., Unit, of Cell Biol, and Morphogen., Univ. of Leiden, Kaiserst.63, 



LEIDEN, Netherlands 

 a Chemota.xis and cell aggregation. Dictyostelium spec, Polyspondylium spec. (Acrasiales) 

 WEYGOLDT, P.; Dr., Prof. - Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 78 FREIBURG, B.R.D. 



(Germany) 

 WHITE, Miss J.; M.A. - Dept. of Developm. Biol., Marischal Coll., Univ. of Aberdeen, ABERDEEN 



AB9 IAS, Scotland, U.K. 

 a Effects of hydrocortisone on embryonic tissue cells grown in vitro. Gallus gallus (Aves) 

 WHITTINGHAM, D. G.; Ph.D. - M.R.C. Mammalian Devi. Unit, Univ. Coll. London, Wolfson House, 



4 Stephenson Way, LONDON NWl 2HE, England 

 WIDERSTEN, B.;Fil. Dr. - Zool. Inst., Univ. of Uppsala, Box 561, S-75 122 UPPSALA 1, Sweden 

 WIERTZ (HOESSELS), Mrs. E. L. M. J.; Ph.D. - Dienst voor Histol., Fac. der Wetenschappen, 



Rijksuniversitair Centrum, Middelheimlaan 1, ANTWERPEN, Belgium 



also: Fac. of Med., Tongersestr.53, MAASTRICHT, Netherlands 

 WIGGLESWORTH, Sir V. B.; Dr., Prof. (Emer.) - Dept. of ZooL, Univ. of Cambridge, Downing St., 



CAMBRIDGE CB2 3EJ, England 



no embryological work in progress 

 WIJK, R. van; Dr. - Dept. of Biophys. Chem., State Univ. of Utrecht, Padualaan 8, UTRECHT 2506, 



Netherlands 

 a Factors affecting growth rate and length of cell cycle phases of normal hepatocytes and cultured 



hepatoma cells; role of cyclic nucleotides, enzymes and hormones (time lapse microcinemato- 



graphy, DNA photometry, autoradiography). Rattus spec. (Rodentia) 

 WILBY, O. K.; D.Phil. ~ Dept. of Zool., Univ. of Glasgow, GLASGOW G12 8QC, Scotland, U.K. 

 a Simulation of developmental processes at the cellular level, including morphology and determina- 

 tion, using a digital computer 

 b Cellular and supracellular processes in limb development, especially control of overall form and 



pattern of chondrogenesis (normal, talpid, wingless, Ametapodia strains). Gallus domesticus 



(Aves) 

 c Pattern and polarity; control of regeneration and budding (experimental study; computer 



simulation). Hydra littoralis (Hydrozoa) 

 WILCOX, M.; Ph.D. - Lab. of Molec. Biol., Med. Res. Council, HUls Rd., CAMBRIDGE CB2 2QH, 



England 

 a Development, especially formation and maintenance of compartments in imaginal discs. Droso- 



phila melanogaster (Diptera) 

 b Mechanisms underlying the heterocyst pattern. Anabaena spec. (Cyanophyceae) 

 WILD, A. E.; Ph.D. - Dept. of Biol., Univ. of Southampton, SOUTHAMPTON S09 5NH, England 

 a Protein transmission across foetal membranes. Oryctolagus cuniculus (Lagomorpha) 

 WILDE, A. G. de; M.D., Ph.D., Prof. - Dept. of Anat. and Embryol., State Univ. of Groningen, 



Oostersingel 69, GRONINGEN, Netherlands 

 a Development of computer programs for the reconstruction, by incremental plotter, of embryonic 



organ structure, 

 b Morphogenesis of the palatal and nose regions, studied by means of reconstructions. Mus 



musculus, Rattus norvegicus (Rodentia), Homo sapiens (Primates) 

 WILLEMSE, M. Th. M.; Ph.D., Prof. - Dept. of Bot., Agric. Univ., Arboretumlaan 4, WAGENINGEN, 



Netherlands 

 a Ultrastructural, histochemical, and comparative study of micro- and macrogametogenesis and 



fertilization. Vaucheria geminata (Xanthophyceae), Equisetum variegatum (Equisetophyta), 



Thuja occidentalis (Cupressaceae), Pinus sylvestris (Pinaceae) 

 b Ultrastructural and experimental study of the division and formation of mitochondria in the 



central and egg cell of the archegonium. Pinus sylvestris (Pinaceae) 

 WILLIAMSON, D. I.; Ph.D., D.Sc. - Dept. of Marine Biol., Univ. of Liverpool, PORT ERIN, Isle of 



Man, U.K. 

 a Laboratory rearing of larval stages; moulting, feeding, number of stages. Palinurus clephas, 



Nephrops norvegicus (Decapoda, Crustacea) 

 b Hatching rhythms. (Decapoda, Crustacea) 

 WILLIAMSON, R. - Beatson Inst, for Cane. Res., Royal Beatson Mem. Hosp., 132 Hill St., 



GLASGOW G3 6UD, Scotland, U.K. 

 a Properties of lens niRNAs; regulation of stability. Gallus domesticus (Aves) (with A. T. H. 



BURNS, R. M. CLAYTON and D. E. S. TRUMAN, Edinburgh) 

 WILSON, I. B.: Ph.D. - Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caerns., Wales, U.K. 

 a Establishment of implantation and early pregnancy. Mus musculus (Rodentia) 

 b Experimental developmental morphology. Same species as a 



c Morphology and endocrinology of viviparity. Chalcides ocellatus, C. sepoides (Lacertilia) 

 WINKLER, L; Dipl.Biol. - Inst. fUr Pflanzenkrankh. und Ptlanzenschutz, Fachgeb. Entomol. und 



107 



