Concepedia

K. Niwa

KN

57

Publications

3.2K

Citations

34

H-Index

1973

Active since

Affiliations

Okayama University(Current)

Kyoto University

Okayama University of Science

Nagoya University

University of Massachusetts Chan Medical School

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

Top concepts

Publications per year

1973–2003

57

Publications

57

Ca<sup>2+</sup>‐Regulating mechanisms that modulate bull sperm capacitation and acrosomal exocytosis as determined by chlortetracycline analysis

Lynn R. Fraser, Lalantha R. Abeydeera, K. Niwa · Molecular Reproduction and Development · 1995 · 255 citations

Capacitation status and in vitro fertility of boar spermatozoa: effects of seminal plasma, cumulus‐oocyte‐complexes‐conditioned medium and hyaluronan

Keita Suzuki, Atsushi Asano, B. Eriksson et al. · International Journal of Andrology · 2002 · 165 citations

Synergistic effect of caffeine and heparin on in-vitro fertilization of cattle oocytes matured in culture

K. Niwa, O. Ohgoda · Theriogenology · 1988 · 141 citations

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In-vitro penetration of pig oocytes matured in culture by frozen–thawed ejaculated spermatozoa

W. H. Wang, K. Niwa, K. Okuda · Reproduction · 1991 · 138 citations · Full text

Effect of sperm concentration during preincubation in a defined medium on fertilization <i>in vitro</i> of pig follicular oocytes

Takashi Nagai, K. Niwa, A. Iritani · Reproduction · 1984 · 136 citations · Full text

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