Assertion: dna polymerase | /r/HasProperty | classified into seven families
Facets:
Source sentences:
text: DNA polymerases are now classified into seven families, based on the amino acid sequences (Braithwaite and Ito, 1993; Ishino and Cann, 1998; Cann and Ishino, 1999; Ohmori et al., 2001; Lipps et al., 2003).