Results: 4

1.
Fig. 3.

Fig. 3. From: The influence of sex, handedness, and washing on the diversity of hand surface bacteria.

Differentiation in hand-surface communities between sexes (A), dominant versus the nondominant hands (B), time since last hand washing (C), and time since last hand washing for each sex (D) determined by using the unweighted UniFrac algorithm. The length of the branches corresponds to the degree of differentiation between bacterial communities in each category. All of the branch nodes shown here were found to be significant (P < 0.001), indicating that each of these categories harbored distinct bacterial communities.

Noah Fierer, et al. Proc Natl Acad Sci U S A. 2008 November 18;105(46):17994-17999.
2.
Fig. 4.

Fig. 4. From: The influence of sex, handedness, and washing on the diversity of hand surface bacteria.

Rarefaction curves showing differences in bacterial diversity on palm surfaces from men and women. (A) Phylogenetic diversity estimated by measuring the average total branch length per sample after a specified number of individual sequences have been observed (36). (B) Diversity estimated by determining the average number of unique phylotypes per hand. For these analyses, we randomly selected 2,400 sequences per hand sample, and thus the average number of phylotypes per hand is lower than for the full dataset (Table 1). Bars indicate 95% confidence intervals.

Noah Fierer, et al. Proc Natl Acad Sci U S A. 2008 November 18;105(46):17994-17999.
3.
Fig. 2.

Fig. 2. From: The influence of sex, handedness, and washing on the diversity of hand surface bacteria.

Average pairwise bacterial community similarity between left and right hands from the same individual (circles) and between hands from different individuals (squares) as measured by using the unweighted UniFrac similarity index (bottom axis, open symbols) or the percentage of phylotypes that are shared between pairs (top axis, filled symbols). Average pairwise values and 95% confidence intervals are shown. For these analyses, 2,500 sequences were randomly selected per sample, and only those samples represented by >2,500 sequences were included (n = 51 and 5,100 pairwise comparisons for intraindividual comparison and interindividual comparisons, respectively).

Noah Fierer, et al. Proc Natl Acad Sci U S A. 2008 November 18;105(46):17994-17999.
4.
Fig. 1.

Fig. 1. From: The influence of sex, handedness, and washing on the diversity of hand surface bacteria.

Relative abundances of the most abundant bacterial groups on the hand surfaces, with the hand samples divided into categories of sex (A), time since last hand washing (B), and the dominant versus the nondominant hand (C). Error bars are 1 standard error of the mean. For the number of sequences and number of samples included in each category and the full taxonomic description of the hand surface bacterial communities see Table S1. Superscripts on the taxon name indicate the phylum or subphylum: 1, Actinobacteria; 2, Firmicutes; 3, Betaproteobacteria; 4, Gammaproteobacteria; 5, Alphaproteobacteria; 6, Bacteroidetes.

Noah Fierer, et al. Proc Natl Acad Sci U S A. 2008 November 18;105(46):17994-17999.

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