Figure 1From: The effect of calcium phosphate nanoparticles on hormone production and apoptosis in human granulosa cellsThe morphology of hydroxyapatite nanoparticles. The nanoparticles were observed by transmission electron microscopy (TEM, JEOL-1400TEM, USA) with an acceleration voltage of 100 kV. The scale bar in the image is 100 nm.Back to article page