Human immunodeficiency virus type 1 (HIV-1) subtype B predominates in Brazil, but in the southern region subtype C is the most frequent, followed by subtypes B, F1 and recombinant forms.
In the Calabria Region, subtype 1b, 2a/2c and genotype 3 showed different associations with age and gender.
Single region subtyping therefore can introduce bias, especially when studying viral characteristics not defined by the pol gene such as co-receptor use.
In addition to the sequence variation in the ELV region, subtype C Vpu contains another putative acidic dileucine motif in the membrane-proximal region of its CD, mutation of which affected the trafficking of Vpu (Ruiz et al., 2008).
Pulsed-field gel electrophoresis (PFGE) (6 ), multilocus sequence typing, outer membrane protein gene (porA) variant region subtyping, and antimicrobial drug susceptibility tests were used to characterize the 17 isolates.
Pulsed-field gel electrophoresis (PFGE), multilocus sequence typing, and outer membrane protein (porA) gene variant region subtyping were used to characterize the 4 case-related W135 N. meningitidis isolates and other isolates from asymptomatic carriers.
This high viral load may be related to and potentially caused by the high protease fitness we observed in CRF19_cpx, and thus could suggest a more important role of pol (subtype D portion), and especially of protease, in disease progression, as compared to the env region (subtype A portion) of CRF19_cpx.
Previous detailed molecular analysis has shown that each of the H. pylori strains contains only one cagA allele and each one of the s- and m-region subtypes of vacA gene.
Loci in subfamily II share a 'GGCTCGG' motif at position 118 within the tRNA region and subtypes IIA and IIB are delineated by an insertion/deletion ('T') at position 51 within the 5' tRNA-related region.
Cyclic V3 peptides representing this region from subtypes A, B and C and from CRF01_AE (AE) and CRF02_AG (AG) (Table 1) were used to assess the cross-reactivity of V3 Abs in the plasma of the panel of RV144 vaccine and placebo recipients.
