Division 1.3.3.3 Determination of cell proliferation (incorporated radioactivity)

Incorporation of ³H-methyl thymidine is measured by ß-scintillation counting as disintegrations per minute (DPM). Incorporation of ¹²⁵I-iododeoxyuridine is measured by ¹²⁵I-counting and also is expressed as DPM. Depending on the approach used, the incorporation will be expressed as DPM/treatment group (pooled approach) or the DPM/animal (individual approach).