science diagram heart medicine artfavor medical
Heart Medical Diagr..…
SseyPlus vector material - exquisite dialogue bubble…
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Four colourful stick people standing with an empty dialogue boxes floating above them. Two men and two women. You m..…
A vertical radius below a horizontal diameter stands for the early human races, sexless and mindless. More info: ht..…
A cross-section view of the human brain as viewed from the front.
Source: http://commons.wikimedia.org/wiki/File:C..…