1.   Multiparameter flow cytometric analysis of labelled nuclei allows the S phase duration of mucosal cells to be estimated.

2.   In particular, for the purposes of this study, it can measure the S phase duration of crypt cells in gastric mucosa.

3.   The method of preparation and of the analysis used to calculate the S phase duration, Ts, was identical to that reported elsewhere.

4.   The flow cytometrically derived S phase duration was similar in gastric body and antral cells.