sentence: 60 The presence of TASK-2 was shown by immunocytochemistry ( ibid ) and three K2P gene transcripts [ KCNK1 ( TWIK-1 ) , KCNK5 ( TASK-2 ) and KCNK6 ( TWIK-2 ) ] were detected with quantitative RT-PCR.60 TASK-2 gene transcription changes during OA suggest that TASK-2 loss could be involved with the progression of OA ( see below , “ Potassium channel involvement in maturation , proliferation and viability ” ) .