Related Experiment Video
Updated: Jun 17, 2026

Human Blastocyst Biopsy and Vitrification
Published on: July 26, 2019
Blastocyst quality scoring based on morphologic grading correlates with cell number
Koji Matsuura1, Nobuyoshi Hayashi, Chisato Takiue
1Cardiovascular Physiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
Abstract:
Blastocyst quality score (BQS), first reported by Rehman et al., is a numerical blastocyst-morphology grading system based on the criteria established by Gardner and Schoolcraft. We demonstrate a positive correlation between the calculated BQS score and cell number by staining thawed human embryos and suggest that BQS can be applied to evaluate culture systems clinically.
More Related Videos
08:06The Immediate Partial Removal of Cumulus-Oocyte Complexes: A Refined Approach for Rapid Observation of In Vitro Fertilization
Published on: October 18, 2024
08:28Morphometric Protocol for the Objective Assessment of Blastocyst Behavior During Vitrification and Warming Steps
Published on: February 28, 2019