of the three new groups , ts 11 fails to make virus dna at non-permissive temperature ( 38 degrees c ) whereas ts 12 and ts 13 synthesize only very small amounts of virus or cellular dna at 38 degrees c. ts 11 , like ts 9 ( halliburton & timbury , 1973 ) fails to switch off host cell dna synthesis at 38 degrees c .
C0007634
cellular
C0007590
cell dna synthesis