Concepedia

Koji Niwa

KN

28

Publications

1.1K

Citations

17

H-Index

1992

Active since

Affiliations

Okayama University(Current)

Okayama University of Science

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

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Publications per year

1992–2021

28

Publications

28

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 et al. · Biology of Reproduction · 1993 · 153 citations · Full text

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 citations · Full text

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 · 1997 · 97 citations · Full text

, , +19

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 et al. · Biology of Reproduction · 1997 · 76 citations · Full text

Penetration of Porcine Oocytes during Maturation in Vitro by Cryopreserved, Ejaculated Spermatozoa1

Wei‐Hua Wang, Lalantha R. Abeydeera, Kiyoshi Okuda et al. · Biology of Reproduction · 1994 · 70 citations

, , +14

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