The mechanism of accumulation of vanadium by ascidians: Some progress towards an understanding of this unusual phenomenon Michibata, H. 489
Physiology
Physiological and immunocytochemical determination of the neurotransmitter at cricket neuromuscular junctions Kawasaki, F., Kita, H. 503
Cell and Molecular Biology
Differential assembly of cytoskeletal and sarcomeric actins in developing skeletal muscle cells in vitro Hayakawa, K., Ono, S., Nagaoka, R., Saitoh, O., Obinata, T. 509
Fine structures of tunic cells and distribution of bacteria in the tunic of the luminescent ascidian Clavelina miniata (Ascidiacea, Urochordata) Hirose, E., Aoki, M., Chiba, K. 519
Nanoprotuberance array in the transparent wing of a hawkmoth, Cephonodes hylas Yoshida, A., Motoyama, M., Kosaku, A., Miyamoto, K. 525
Tetrahymena nuclear proteins that bind to a micronucleus-specific sequence during vegetative growth Katoh, M., Watanabe, Y., Numata, O. 527
Angioarchitectural classification of the fungiform papillae in the cat tongue Ojima, K., Takeda, M., Saiki, C., Matsumoto, S. 533
Genetics
Genetic variation and population divergence in the mountain brown frog Rana ornativentris Sumida, M., Nishioka, M. 537
Biochemistry
Amino acid sequence of the monomer subunit of the extracellular hemoglobin of the earthworm, Pheretima hilgendorfi Shishikura, F. 551
Developmental Biology
Germ cell death in the degenerating right ovary of the chick embryo Ukeshima, A. 559
Paired pineals in the developing quail (Coturnix coturnix japonica) embryos Araki, M., Watanabe, K. 565
Expression of chicken troponin T isoforms in cultured muscle cells Mashima, J., Nakada, K., Yao, Y., Miyazaki, J.-I., Hirabayashi, T. 571
Endocrinology
Extensive distribution of galanin-immunoreactive neuronal systems in a fresh water snail, Indoplanorbis exustus, and partial coexistence with choline acetyltransferase-like immunoreactivity Yamamoto, T., Suzuki, H., Uemura, H. 577
Hormone-dependent expression of -casein mRNA in mouse mammary epithelial cells cultured on floating collagen gels Sasaki, T., Enami, J. 587
Sexually different expression of neurohypophysial hormone genes in the preoptic nucleus of pre-spawning chum salmon Ota, Y., Ando, H., Ban, M., Ueda, H., Urano, A. 593
Innervation of steroid-producing cells in the ovary of tilapia Oreochromis niloticus Nakamura, M., Specker, J.L., Nagahama, Y. 603
Inhibitory effect of progesterone on sexual receptivity in female rats: A temporal relationship to estrogen administration Satou, M., Yamanouchi, K. 609
Systematics and Taxonomy
Phylogenetic relationships among Japanese species of the family Sciuridae (Mammalia, Rodentia), inferred from nucleotide sequences of mitochondrial 12S ribosomal RNA genes Oshida, T., Masuda, R., Yoshida, M.C. 615
Phylogenetic position of the Japanese river otter Lutra nippon inferred from the nucleotide sequence of 224 bp of the mitochondrial cytochrome b gene Suzuki, T., Yuasa, H., Machida, Y. 621
-casein mRNA in mouse mammary epithelial cells cultured on floating collagen gels