ZR and TD (single treatment) were
positioned in the positive PC1 region consisting of a cluster with
elevated concentrations of ethanol, some alcohols, and most ketones.
In contrast, PG was located in the negative PC1 region where
two single and mixed types were separated along PC2. TD/PG
appeared to have similar characteristics to the 11% and 14% control
groups, exhibiting both positive PC1/PC2 attributes and thus being
assigned to the same cluster.