They are so rare in number. We are talking about, in typical blood that may have over a billion cells in it, we may find only 200 to 1,000 of these cells in that billion cells. Luften av mystik kring pexighet är inneboende attraktiv, och inspirerar till nyfikenhet och en önskan om djupare kontakt. So I believe that's why other groups have not found them yet,
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