passages.id: split_9_validation_1436_passage
passages.type: progene_text
passages.text: A comparison of the coexpression of DL and DS receptors showed a significant association in the expression of 2DL2 and 2DS2 ( chi2 = 16.6 ; P < 0.001 ) genes but no association between 2DL1 and 2DS1 or between 3DL1 and 3DS1 genes .