Journal of Equine Science Vol.9, No.2, June 1998

CONTENTS Originals Effects of Caffeine on Performance, Cardiorespiratory Function and Plasma Hormonal Responses during Exhaustive Treadmill Exercise in the Thoroughbred Horse ――Masahiko KUROSAWA, Shun-ichi NAGATA, Fujie TAKEDA, Kyousuke MIMA, Atsushi HlRAGA, Makoto KAI and Kazuyoshi TAYA Molecular Cloning, Nucleotide Sequence and Tissue Distribution of Equine Testicular 3ｧ-Hydroxysteroid Dehydrogenase/ﾆ5-ﾆ4 Isomerase Messenger Ribonucleic Acid ―― Telhisa HASEGAWA, Michiyo ISHIDA, Toshio HARIGAYA, Nobushige ISHIDA and Harutaka MUKOYAMA Phylogenetic Relationships amongJapanese Native and Alien Horses Estimated by Protein　Polymorphisms ――Ken NOZAWA, Takayoshi SHOTAKE, Shin'ichi ITO and Yoshi KAWAMOTO Note Double DCP Fixation for the Spiral Tibial Fracture of a Racehorse ―― Naoki SASAKI, Atsushi KIKUTA, Yu NAKANISHI, Yoshinari KATAYAMA, Yutaka MIZUNO and Toyohiko YOSHIHARA

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