Hello,
This picture is J774A.1 cell line. I wonder whether the cells on the right side of picture, and middle (upper) of picture are stressed. They are cultured in DMEM with 10% FBS and 1% antibiotics.
I only have a experience in culturing RAW264.7 cell line, and I have not seen the cell showing that shape in normal condition.
Although you can see a very small number of unusual cell, there are cells as many as round-shaped cells in the culture flask, actually.
The cells are purchased from ATCC and passaged twice.
Thank you.
Sincerely,
Hyo-Yeon Kim