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Sex comparisons of individual glomerular volume (IGV) by total nephron number (Nglom) in African and Caucasian Americans. Males were matched to females based on age and Nglom only (model 1). Each circle represents one glomerulus and each column represents aggregated data from 6 subjects per category (30 glomeruli per subject); black circles for African Americans, white circles for Caucasian Americans; grey and black lines represent mean IGV and standard deviation per category.
