TABLE 2.

Morphological variation among T. rubrum strains from patients showing genetic differences

Patient and time	RFLP pattern	Mycelium type on SAB-CCG	Presence of melanin on BHIa	Mycelium type on Casamino Acids plain agar	Pigment on BCPMSGb	Presence of urease on Christensen's urea brothc
Patient 4
Dec. 96	Tr-5	Cottony	−	Cottony	Yellow-red	−
Sept. 97	Tr-3	Cottony	−	Cottony	Yellow	±
Nov. 97	Tr-3	Cottony	−	Cottony	Yellow	−
Dec. 97	Tr-5	Cottony	−	Cottony	Red	−
Patient 5
Dec. 96	Tr-1	Cottony	−	Cottony	Red	−
Aug. 97	Tr-1	Cottony	+	Granular	Red-yellow	−
Nov. 97	Tr-2	Cottony	+	Cottony	Red	−
Patient 6
Dec. 97	Tr-3	Cottony	−	Cottony	Red	−
Jan. 98	Tr-3	Cottony	−	Cottony	Red	−
Apr. 99	Tr-5	Cottony	−	Cottony	Red	−
Patient 9
Jan. 98	Tr-4	Cottony	+	Cottony	Yellow	±
Mar. 98	Tr-3	Cottony	±	Cottony	Yellow	±
Apr. 98	Tr-3	Granular	−	Cottony	Red	−
Patient 15
Mar. 97	Tr-2	Cottony	−	Cottony	Yellow	−
Dec. 97	Tr-5	Cottony	−	Cottony	Red-purple	−

^a−, no melanin; +, melanin present; ±, melanin sometimes present. 

^bBCPMSG, bromeresol purple-milk solids-glucose agar; pigment on colony reverse was recorded. 

^c−, urease negative (orange); +, urease positive (red); ±, a change in color was noticed.