Koji Niwa - Concepedia

Author

Koji Niwa

Okayama University

Also Known As

KOJI NIWA, Koji NIWA, Koji Niwa

Publications

1.2K

Citations

H-Index

Concepts

All Affiliations

Okayama University Okayama University of Science

About

Koji Niwa is an author at Okayama University specializing in public health, fertility, and reproductive biology.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Medicine	12	14	422
2	Public Health	12	14	422
3	Cell Biology	5	5	164
4	Biology	4	4	163
5	Biochemistry	1	1	61

Koji Niwa

Publications

1.1K

Citations

H-Index

Page 1

	Year	Citations
Effects of Phosphate, Energy Substrates, and Amino Acids on Development of in Vitro-Matured, in Vitro-Fertilized Bovine Oocytes in a Chemically Defined, Protein-Free Culture Medium1 Jong-Heung Kim, Koji Niwa, Jeong‐Mook Lim, Biology of Reproduction	1993	153
Activation, Pronuclear Formation, and Development In Vitro of Pig Oocytes Following Intracytoplasmic Injection of Freeze-Dried Spermatozoa1 In‐Kiu Kwon, Ki‐Eun Park, Koji Niwa Biology of Reproduction	2004	121
Stage-Dependent Development of Rat 1-Cell Embryos in a Chemically Defined Medium after Fertilization in Vivo and in Vitro K. Miyoshi, Tomoko Kono, Koji Niwa Biology of Reproduction OocyteFertilityStage-dependent DevelopmentReproductive Biology1-Cell Embryos	1997	97
Amino Acids in Maturation Medium and Presence of Cumulus Cells at Fertilization Promote Male Pronuclear Formation in Porcine Oocytes Matured and Penetrated in Vitro1 Hakhyun Ka, Ken Sawai, Weihua Wang, Biology of Reproduction	1997	76
Penetration of Porcine Oocytes during Maturation in Vitro by Cryopreserved, Ejaculated Spermatozoa1 Wei‐Hua Wang, Lalantha R. Abeydeera, Kiyoshi Okuda, Biology of Reproduction Embryo CultureImmature PorcineInfertilityMaturation CultureDevelopmental Biology	1994	70
Stage-Specific Requirement of Cysteine during in Vitro Maturation of Porcine Oocytes for Glutathione Synthesis Associated with Male Pronuclear Formation1 Ken Sawai, Hiroaki Funahashi, Koji Niwa Biology of Reproduction OocyteFertilityReproductive BiologyOocyte GlutathioneEmbryology	1997	61
Synergetic effects of epidermal growth factor and gonadotropins on the cytoplasmic maturation of pig oocytes in a serum–free medium Weihua Wanga, Koji Niwa Zygote	1995	54
Both fertilization promoting peptide and adenosine stimulate capacitation but inhibit spontaneous acrosome loss in ejaculated boar spermatozoa in vitro Hiroaki Funahashi, Atsushi Asano, Toshimitsu Fujiwara, Molecular Reproduction and Development	2000	49
Effects of Partial Removal of Cytoplasmic Lipid on Survival of Vitrified Germinal Vesicle Stage Pig Oocytes Ki-Eun Park, In‐Kiu Kwon, Myung-Sook Han, Journal of Reproduction and Development	2005	43
Fertilization and Development In Vitro of Bovine Oocytes Following Intracytoplasmic Injection of Heat-Dried Sperm Heads Kyung-Bon Lee, Koji Niwa Biology of Reproduction OocyteFertilityGynecologySemen AnalysisSperm Heads	2005	30

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