Fig. 1From: Model construction and drug therapy of primary ovarian insufficiency by ultrasound-guided injectionSchema of different premature ovarian insufficiency (POI) models. Note: POI-C: POI-cyclophosphamide; POI-B: POI-cyclophosphamide + Busulfan; POI-U: POI-Ultrasonic guidance cyclophosphamide injection; MS: Maternal separationBack to article page