Fig. 2
From: Liquid biopsy of embryo culture medium for assessing human embryo viability using Raman spectroscopy

(a) Score plots (PC 1 vs. PC 2) and (b) loading plot of PC 1. (c) Box blots of PC 1 scores. The box represents the interquartile range (IQR = Q3/4 − Q1/4), with ■ indicating the mean, ♦ marking outliers, the central line showing the median, and error bars representing ± 1.0 standard deviation (SD).