Monitoring Antibiotic Residues and Corresponding Antibiotic Resistance Genes in an Agroecosystem

Table 5

Polymerase chain-reaction (PCR) identification of antibiotic-resistant strains using different tetracycline (TC) and sulfonamide (SA) primers.

Primer	Sed. #1	Sed. #2	Sed. #3	Sed. #4	Soil #1	Soil #2
tet(S)	—	○	—	○	—	—
tet(T)	—	○	—	—	○	—
otr(A)	—	—	—	○	○	—
sul(I)	—	○	○	○	○	○
sul(II)	○	○	○	○	○	○
sul(III)	○	○	○	○	○	○
sul(A)	○	○	○	○	○	○

Absent.
Present.