Figure 4 | Scientific Reports

Figure 4

From: Androstenedione and testosterone but not progesterone are potential biomarkers of pregnancy in Humpback Whales (Megaptera novaeangliae) approaching parturition

Figure 4

Principal component analysis biplots of (A) the “Northward Migration” (NM) and (B) “Southward Migration” (SM) sample sets. NM samples were classified as “High androstenedione”, , “Medium androstenedione” , and “Low steroid hormones”, . SM data set features samples classified as “High progesterone”, , “Medium androstenedione” , and “Low steroid hormones”, . Colored ellipses represent 95% confidence regions for each cluster.

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