Tadao Hama

647 total citations
36 papers, 485 citations indexed

About

Tadao Hama is a scholar working on Molecular Biology, Cell Biology and Cellular and Molecular Neuroscience. According to data from OpenAlex, Tadao Hama has authored 36 papers receiving a total of 485 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Molecular Biology, 9 papers in Cell Biology and 4 papers in Cellular and Molecular Neuroscience. Recurrent topics in Tadao Hama's work include melanin and skin pigmentation (9 papers), bioluminescence and chemiluminescence research (6 papers) and Reproductive biology and impacts on aquatic species (4 papers). Tadao Hama is often cited by papers focused on melanin and skin pigmentation (9 papers), bioluminescence and chemiluminescence research (6 papers) and Reproductive biology and impacts on aquatic species (4 papers). Tadao Hama collaborates with scholars based in Japan and Pakistan. Tadao Hama's co-authors include Masataka Obika, Hiroyuki Ide, Jiro Matsumoto, Hajime Ide, Kenzo Takata, Hidenobu Tsujimura, Goro Eguchi, Tamotsu Goto, Toshio Goto and Ryo Kikuchi and has published in prestigious journals such as Nature, Genetics and Annals of the New York Academy of Sciences.

In The Last Decade

Tadao Hama

36 papers receiving 452 citations

Peers

Tadao Hama

CMN

GENET

Masataka Obika Japan

Ronald R. Novales United States

Choh Hao Li United States

Maria Aparecida Visconti Brazil

Darcy Gilmour Australia

H. Schnabl Germany

Katsuhiro Sakano Japan

Carole L. Browne United States

M Whitaker United Kingdom

Liam Williams New Zealand

Masataka Obika Japan

Tadao Hama

372 ×1.5

389 ×2.4

251 ×3.2

CMN

105 ×1.8

58 ×1.2

GENET

Citations per year, relative to Tadao Hama Tadao Hama (= 1×) peers Masataka Obika

Countries citing papers authored by Tadao Hama

Since Specialization

Citations

This map shows the geographic impact of Tadao Hama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Tadao Hama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tadao Hama more than expected).

Fields of papers citing papers by Tadao Hama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tadao Hama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Tadao Hama. The network helps show where Tadao Hama may publish in the future.

Co-authorship network of co-authors of Tadao Hama

This figure shows the co-authorship network connecting the top 25 collaborators of Tadao Hama. A scholar is included among the top collaborators of Tadao Hama based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Tadao Hama. Tadao Hama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hama, Tadao, et al.. (1985). Inductive Capacities for the Dorsal Mesoderm of the Dorsal Marginal Zone and Pharyngeal Endoderm in the Very Early Gastrula of the Newt, and Presumptive Pharyngeal Endoderm as an Initiator of the Organization Center*. Development Growth & Differentiation. 27(4). 419–433. 30 indexed citations

Hama, Tadao, et al.. (1979). EFFECT OF AGING ON NEURAL COMPETENCE OF PRESUMPTIVE ECTODERM, AND EFFECT OF AGED ECTODERM ON DIFFERENTIATION OF THE ORGANIZER IN CYNOPS PYRRHOGASTER II. ROLE OF EXTREME POSTERIOR OF THE ARCHENTERIC ROOF IN THE SLIT-BLASTOPORE STAGE IN NORMAL DEVELOPMENT. Development Growth & Differentiation. 21(6). 509–517. 3 indexed citations

Hama, Tadao, et al.. (1979). The effect of aging on the neural competence of the presumptive ectoderm and the effect of aged ectoderm on the differentiation of the trunk organizer inCynops pyrrhogaster. Development Genes and Evolution. 187(1). 13–23. 10 indexed citations

Hama, Tadao, et al.. (1979). Studies on the formation and state of determination of the trunk organizer in the newt,Cynops pyrrhogaster. Development Genes and Evolution. 187(1). 25–34. 34 indexed citations

Hama, Tadao, et al.. (1976). ELECTRON MICROSCOPIC DEMONSTRATION OF TYROSINASE IN PTERINOSOMES OF THE FROG XANTHOPHORE, AND THE ORIGIN OF PTERINOSOMES*. Development Growth & Differentiation. 18(3). 289–299. 18 indexed citations

Ide, Hiroyuki & Tadao Hama. (1976). Transformation of amphibian iridophores into melanophores in clonal culture. Developmental Biology. 53(2). 297–302. 30 indexed citations

Hama, Tadao, et al.. (1973). Structural changes of drosopterinosomes (red pigment granules) during the erythrophore differentiation of the frog, Rana japonica, with reference to other pigment-containing organelles. Cell and Tissue Research. 137(3). 331–343. 12 indexed citations

Kikuchi, Ryo, et al.. (1969). The Carotenoids of the Medaka, Oryzias latipes, a Teleost. NIPPON SUISAN GAKKAISHI. 35(2). 187–198. 4 indexed citations

Hama, Tadao. (1967). Nouvelle demonstration de la coexistence de la drosopterine et de la purine dans le leucophore de Medaka (Oryzias latipes, teleosteen). 161. 1197–1200. 2 indexed citations

10.

Hama, Tadao, et al.. (1967). Studies on the Chromatophores of Oryzias latipes (Teleostean Fish): Behavior of the Pteridine, Fat and Carotenoid during Xanthophore Differentiation in the Color Varieties. Proceedings of the Japan Academy. 43(9). 901–906. 8 indexed citations

11.

Hama, Tadao, et al.. (1966). Amelanotic Melanophore in Color Varieties of the Medaka, Oryzias latipes. Proceedings of the Japan Academy. 42(8). 929–933. 2 indexed citations

12.

Hama, Tadao. (1963). THE RELATION BETWEEN THE CHROMATOPHORES AND PTERIN COMPOUNDS. Annals of the New York Academy of Sciences. 100(1). 977–986. 60 indexed citations

13.

Matsumoto, Jiro, et al.. (1960). On the properties of cyprino-pourpre A2, a pterin isolated from the skin of cyprinidae, and its relation to ichthyopterin or 7-hydroxybiopterin. Journal of Comparative Physiology A. 43(5). 531–543. 10 indexed citations

14.

Hama, Tadao, Jiro Matsumoto, & Masataka Obika. (1960). Localization of Pterins in the Goldfish-Skin Melanophores and Erythrophores. Proceedings of the Japan Academy. 36(4). 217–222. 10 indexed citations

15.

Hama, Tadao, et al.. (1960). Biological and Chemical Properties of Cyprino-purple C, a New Pterin Found in the Skin of Cyprinid Fishes. Proceedings of the Japan Academy. 36(6). 346–351. 6 indexed citations

16.

Matsumoto, Jiro, et al.. (1960). RELATION BETWEEN THE PIGMENTATION AND PTERIN DERIVATIVES OF CHROMATOPHORES DURING DEVELOPMENT IN THE NORMAL BLACK AND TRANSPARENT SCALED TYPES OF GOLDFISH (CARASSIUS AURATUS). Genetics. 45(9). 1177–1189. 15 indexed citations

17.

Hama, Tadao & Masataka Obika. (1959). Histological distribution of pterins in the skin of bull‐frog. The Anatomical Record. 134(1). 25–36. 19 indexed citations

18.

Hama, Tadao & Masataka Obika. (1958). On the nature of some fluorescent substances of pterin type in the adult skin of toad,Bufo vulgaris formosus. Cellular and Molecular Life Sciences. 14(5). 182–184. 25 indexed citations

19.

Hama, Tadao & Teppei Goto. (1955). [Changes of fluorescent material during development of amphibians].. PubMed. 149(7-8). 859–60. 2 indexed citations

20.

Hama, Tadao, et al.. (1954). [Photochemical transformation of rana-chrome 1, a pterin fluorescent substance in the frog].. PubMed. 148(7-8). 754–6. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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