TABLE 3.

Composition of sterols in P. carinii hominis organisms isolated from cryopreserved human P. carinii-infected lungs and P. carinii-positive BALF

GLC peak	Wt % ± SD (SEM) of sterolsa
	P. carinii hominis isolated from:						P. carinii cariniic
	P. carinii-infected lungs			BALF
	Total	Excluding cholesterol	Only signature sterolsb	Total	Excluding cholesterol	Only signature sterols	Total	Only signature sterols
1	83.8 ± 13.5 (4.3)			99.0 ± 0.5 (0.2)			78.4
2	3.8 ± 8.0 (5.2)	12.7		ND			Trace
3	0.5 ± 1.0 (0.3)	5.8		ND			0.6
4	0.2 ± 0.6 (0.2)	0.8		ND			0.1
5	0.5 ± 0.6 (0.2)	3.6		ND			0.2
6	0.0 ± 0.1 (0.0)	0.1		ND			Trace
7	0.2 ± 0.4 (0.1)	2.7		ND			0.6
8	3.5 ± 4.3 (1.4)	28.0		0.1 ± 0.1 (0.0)	5.7		3.7
9	0.1 ± 0.2 (0.1)	0.8		ND			0.2
10	0.2 ± 0.3 (0.1)	2.8		ND			1.5
11	0.0 ± 0.1 (0.0)	0.2		ND			0.0
12	ND	ND		ND			1.2
13	0.9 ± 0.9 (0.3)	8.6	24.8	0.1 ± 0.0 (0.0)	12.0	14.6	4.5	41.4
14	0.0 ± 0.0 (0.0)	0.6		ND			0.1
15	0.7 ± 1.8 (0.6)	3.8		0.1 ± 0.0 (0.0)	11.7		2.1
16	1.2 ± 2.0 (0.6)	10.8	31.2	0.0 ± 0.0 (0.0)	0.4	0.4	0.9	8.6
17	0.1 ± 0.2 (0.1)	0.85		ND			0.1
18	0.0 ± 0.0 (0.0)	0.3		ND			0.3
19	0.2 ± 0.2 (0.1)	1.6	4.5	0.7 ± 0.4 (0.1)	67.4	82.3	1.8	17.1
20	0.3 ± 0.3 (0.1)	2.5	7.2	0.0 ± 0.0 (0.0)	0.1	0.1	3.5	32.0
21	0.1 ± 0.2 (0.1)	0.6		0.0 ± 0.0 (0.0)			0.1
22	0.1 ± 0.1 (0.0)	0.2		0.0 ± 0.0 (0.0)			0.0
23	0.0 ± 0.1 (0.0)	0.2		ND			ND
24	1.8 ± 3.9 (1.2)	11.2	32.2	0.0 ± 0.0 (0.0)	2.1	2.7	0.1	0.9

^aOrganism preparations isolated from P. carinii-infected lungs, n = 10; organism preparations isolated from BALF, n = 10. ND, not detected. 

^bIncludes only the five major P. carinii-specific signature sterols. 

^cValues are from reference 17.