deletions | additions       diff --git a/figures/NMDSgrid/caption.md b/figures/NMDSgrid/caption.md  index 715cc1d..76f1aa6 100644  --- a/figures/NMDSgrid/caption.md  +++ b/figures/NMDSgrid/caption.md 
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Non-metric multidimensional scaling (NMDS) ordination plots, based on Bray-Curtis (Panels A and C) or Unweighted Unifrac (Panels B and D) distances between samples obtained from the International Space Station, from homes on Earth, and from 13 body site from the Human Microbiome Project. Plots The plots in panels  A and B are identical, show identical data sets  as are each other, as do the plots in panels  C and D, except that the D. The  points in A vs. B and C vs. D  are colored differently as an aid for visualization. In these plots, points that are closer together have more similar microbial communities. Note, the crew and lab vent samples that are distinct from the other ISS samples Figure MNDS_ISS_only, are more similar to the human gastrointestinal tract samples from the HMP. This graph was produced using the Phyloseq package \cite{McMurdie_2013} in R \cite{R}