Table 2. Total sequence tag counts per patient for principal bacterial classes detected in brain¹.

	Other Disease Controls				HIV/AIDS				Surgical Samples
Bacterial Class	ODC1	ODC2	ODC3	ODC4	HIV1	HIV2	HIV3	HIV4	SURG1	SURG2
α-Proteobacterium	168	39	98	27	41	49	37	17	3	19
Actinobacterium	13	8	6	7	17	9	24	4	0	0
β-Proteobacterium	5	3	0	0	0	0	1	0	0	0
γ-Proteobacterium	2	0	2	2	0	4	1	0	0	0
βIII-tubulin 2	35	291	36	20	87	223	65	73	47	582

¹All sequence tag counts were normalized across experiments.

²Host gene.