Fig. 6. In vitro genotoxicity in mouse lymphoma cells on a per mg TPM basis of
American-blended reference cigarette 2R4F and experimental cigarettes containing
no (control) or inclusions of kretek ingredient mixes A, B, and C. Mutagenicity
results are given as 1/C3B values calculated over the two TPM batches tested.
Remarks: 2R4F a and Control a refers to Mix A and B, 2R4F b and Control b refers to
Mix C as groups tested parallel.