Hi everyone,
For my experiments I need to work with the rat pancreatic cell line Ar42J. I have purchased (twice now) the cells from ATCC, however after the process of thawing and transferring them to culture flasks (Corning) with the recommended media (F12K Medium + 20% FBS) the cells did not attach to the flask after several days and only floating cells were observed. According to ATCC the cells should attach after 3-4 days and grow in small colonies, but unfortunately I didn't observe any of this.
It should be noted that I had also checked that our incubators in the cell lab were running optimally (5% CO2, 37deg).
Does anyone have experience with these cells and can help me out what I am doing wrong?