Tomonaga, S. & Zhang, H. & Kobayashi, K. & Fujii, R. & Teshima, K. (1992)
Plasma cells in the spleen of the Aleutian skate, Bathyraja aleutica. Archives of Histology and Cytology, 55(3), 287–294
DOI: 10.1679/aohc.55.287

Kobayashi, K. & Tomonaga, S. & Tanaka, Sho (1992)
Identification of a second immunoglobulin in the most primitive shark, the frill shark, Chlamydoselachus anguineus. Developmental and Comparative Immunology, 16(4), 295–299
DOI: 10.1016/0145-305X(92)90004-V

Kobayashi, K. & Tomonaga, S. (1988)
The second immunoglobulin class is commonly present in cartilaginous fish belonging to the order Rajiformes. Molecular Immunology, 25(2), 115–120
DOI: 10.1016/0161-5890(88)90058-2

Kobayashi, K. & Tomonaga, S. & Tanaka, Sho (1987)
Immunoglobulins of Frill Shark, Chlamydoselachus anguineus [in Japanese], Report of Japanese Society for Elasmobranch Studies, 23, 1–2

Tomonaga, S. & Kobayashi, K. & Tanaka, Sho (1987)
Lymphod Tissues of the Frill Shark, Chlamydoselachus anguineus [in Japanese], Report of Japanese Society for Elasmobranch Studies, 23, 3–4

Teshima, K. & Tomonaga, S. (1986)
Primordial Germ Cells and Lymphomyeloid System in the Embryos of the Aleutian Skate, Bathyraja aleutica. Japanese Journal of Ichthyology, 33(1), 19–26
DOI: 10.1007/BF02905555

Teshima, K. & Tomonaga, S. (1986)
Reproduction of Aleutian skate, Bathyraja aleutica with comments on embryonic development. In Uyeno, T. & Arai, R. & Taniuchi, T. & Matsuura, K. (Eds) Proceedings of the second international conference on Indo-Pacific fishes. Ichthyological Society of Japan, Tokyo: 303–309

Tomonaga, S. & Kobayashi, K. & Hagiwara, K. & Yamaguchi, K. & Awaya, K. (1986)
Gut-Associated Lymphoid Tissue in Elasmobranchs. Zoological Science, 3(3), 453–458

Tomonaga, S. & Kobayashi, K. (1985)
A second class of immunoglobulin in the cartilaginous fishes. Developmental and Comparative Immunology, 9(4), 797–802
DOI: 10.1016/0145-305X(85)90045-X

Tomonaga, S. & Kobayashi, K. & Hagiwara, K. & Sasaki, K. & Sezaki, K. (1985)
Studies on immunoglobulin and immunoglobulin-forming cells in Heterodontus japonicus, a cartilaginous fish. Developmental and Comparative Immunology, 9(4), 617–626
DOI: 10.1016/0145-305X(85)90027-8

Kobayashi, K. & Tomonaga, S. & Teshima, K. & Kajii, T. (1985)
Ontogenic studies on the appearance of two classes of immunoglobulin-forming cells in the spleen of the Aleutian skate, Bathyraja aleutica, a cartilaginous fish. European Journal of Immunology, 15(9), 952–956
DOI: 10.1002/eji.1830150916

Hagiwara, K. & Kobayashi, K. & Kajii, T. & Tomonaga, S. (1985)
J-chain-like component in 18-S immunoglobulin of the skate Raja kenojei, a cartilaginous fish. Molecular Immunology, 22(7), 775–778
DOI: 10.1016/0161-5890(85)90142-7

Teshima, K. & Tomonaga, S. (1985)
Note on Primordial Germ Cells found in the Aleutian Skate Embryos [in Japanese], Report of Japanese Society for Elasmobranch Studies, 20, 29–30

Kobayashi, K. & Tomonaga, S. & Kajii, T. (1984)
A second class of immunoglobulin other than IgM present in the serum of a cartilaginous fish, the skate, Raja kenojei: Isolation and characterization. Molecular Immunology, 21(5), 397–404
DOI: 10.1016/0161-5890(84)90037-3

Tomonaga, S. & Kobayashi, K. & Kajii, T. & Awaya, K. (1984)
Two populations of immunoglobulin-forming cells in the skate, Raja kenojei: Their distribution and characterization. Developmental and Comparative Immunology, 8(4), 803–812
DOI: 10.1016/0145-305x(84)90063-6