Array and FISH analysis of BAC clone RP11-100C24 (loss). (i) The array detected deletion of RP11-100C24 could not be confirmed in interphase (ii) and metaphase cells by FISH (iii). The details of profile interpretation are described in Tyson et al . Briefly, deletion of a clone was considered if the red and the blue array profiles show separation for that clone and the red profile is above the line corresponding to the value of 1. On the other hand, if the blue array profile is above the line corresponding to the value of 1, a gain for the clone is considered.