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RAPD PCR typing results from two infant rectal swabs where genetic differences were identified through unique RAPD patterns. (A) Five unique RAPD patterns identified five STs and four serotypes amongst ten GBS isolates, lanes 1–5: 1 kb DNA ladder, GBS serotype reference strains NCTC 9993 (serotype Ia), NCTC 8187 (serotype Ib), NCTC 11080 (serotype III), and a negative water control (B) four unique RAPD patterns identified three serotypes and four STs.
