▁is ▁a ▁mixture ▁of ▁species ▁but ▁domin ated ▁by ▁b - Pro te ob acter ia ▁and ▁F lav ob acter ial es . ▁E colog ically , ▁se b ace ous ▁areas ▁had ▁greater ▁species ▁rich ness ▁than ▁mo ist ▁and ▁dry ▁ones . ▁The ▁areas ▁with ▁least ▁similarity ▁between ▁people ▁in ▁species ▁were ▁the ▁spaces ▁between ▁fingers , ▁the ▁spaces ▁between ▁to es , ▁ax illa e , ▁and ▁um bil ical ▁cord ▁st ump . ▁Most ▁similarly ▁were ▁beside ▁the ▁nost ril , ▁n ares ▁( inside ▁the ▁nost ril ), ▁and ▁on ▁the ▁back . ▁ ▁Ref lect ing ▁upon ▁the ▁divers ity ▁of ▁the ▁human ▁skin ▁research ers ▁on ▁the ▁human ▁skin ▁micro bi ome ▁have ▁observed : ▁" h air y , ▁mo ist ▁under ar ms ▁lie ▁a ▁short ▁distance ▁from ▁smooth ▁dry ▁for ear ms , ▁but ▁these ▁two ▁nich es ▁are ▁likely ▁as ▁e colog ically ▁dis similar ▁as ▁rain for ests ▁are ▁to ▁desert s ." ▁ ▁The ▁N I H ▁has ▁launched ▁the ▁Human ▁Micro bi ome ▁Project ▁to ▁character ize ▁the ▁human ▁micro bi ota ▁which ▁includes ▁that ▁on ▁the ▁skin ▁and ▁the ▁role ▁of ▁this ▁micro bi ome ▁in ▁health ▁and ▁disease . ▁ ▁Micro organ isms ▁like ▁St ap hy loc oc cus ▁e pid erm id is ▁colon ize ▁the ▁skin ▁surface . ▁The ▁density ▁of ▁skin ▁fl ora ▁depends ▁on ▁region ▁of ▁the ▁skin . ▁The ▁dis in fect ed ▁skin ▁surface ▁gets ▁re colon ized ▁from