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. 2021 May 25;77(4):763–769. doi: 10.1093/gerona/glab146

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Figure 1. — The box and whisker plots for age trends in serum GDF-8 (A) and GDF-8 (B) levels in community-dwelling healthy men and 5aR participants, 19–100 years, by decades of age. GDF = growth and differentiation factor; 5aR = 5α-reductase. Box-and-whisker plot: Box shows the range between first and third quartile and horizontal line inside the box is the median. The upper whisker indicates largest value smaller than 1.5 interquartile range (IQR) above third quartile and the lower whisker indicates smallest value larger than 1.5 IQR below the first quartile. Dots show values outside ranges specified by whiskers.