Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.
The line was derived from the WR19 tumor induced by Abelson murine leukemia virus (see also ATCC TIB-70)
but does not produce Abelson virus.
The cells are negative for surface immunoglobulin (sIg-) and Ia (Ia-).
The line does not pinocytose neutral red, phagocytose zymosan or latex beads and does not secrete lysozyme.
Tested and found negative for ectromelia virus (mousepox).