Photo catalogue for the classification of cell colonies in the Syrian hamster embryo (SHE) cell transformation assay at pH 6.7

This catalogue is a display of Syrian hamster embryo (SHE) cell colony photos representative of the cell transformation assay (CTA) carried out at pH 6.7. It is intended as a visual aid for the identification and the scoring of cell colonies in the conduct of the assay.A proper training from experienced personnel together with the protocol reported in this issue and the present photo catalogue will support method transfer and consistency in the assay results.

► The catalogue for the SHE cell transformation assay is an aid for colony scoring.
► It gives advice for scoring of non-transformed, altered and transformed colonies.
► Together with the assay protocol it can be used for training of assay performance.