TABLE 2.

Groups of nosZ gene fragments used to determine sequencing primers

Sequencing group	nosZ clones
Group A	696C, 696J, 696G, ProR
Group B
Subgroup 1	696B, 696H, 696M, 696Q, 696S, 696T, 696W, ProQ
Subgroup 2	S321195C, 696A, 696D, 696E, 696I, 696K, 696O, 696AB, ProP, ProV
Group C
Subgroup 1	ProO, ProB, ProC, ProD, ProI, 696F
Subgroup 2	ProA, ProE, ProG, ProH, ProS, ProT
Subgroup 3	696L, 696R