Coria M F
Appl Microbiol. 1972 Feb;23(2):281-4. doi: 10.1128/am.23.2.281-284.1972.
The Beaudette strain of avian infectious bronchitis virus propagated in chicken embryo kidney cells is stabilized by exposure to 1 M MgSO(4) at 50 C for 80 min, at pH values ranging from 4 to 10.