Table 2.

DNA fragments sizes of PCR products after digestion with Mspl.

Mutation	No. of strains	Fragments (bp)						Observed phenotype
		65	132	137	153	220	228
No mutation	31 (6 INH resistant, and 25 INH sensitive isolates)	+		+	+		+	Wild type
At codon 315	14	+	+	+			+	Type 1
At codon 463	5				+	+	+	Type 2