živčna celica: http://medicalpicturesinfo.com/wp-content/uploads/2011/09/Nerve-Cell-4.jpg
izvorne celice: http://learn.genetics.utah.edu/content/stemcells/quickref/somaticstemcells.jpg
rdeče krvničke: http://www.interactive-biology.com/wp-content/uploads/2012/07/RedBloodCells3.jpg
izvorne celice: http://learn.genetics.utah.edu/content/stemcells/quickref/somaticstemcells.jpg
rdeče krvničke: http://www.interactive-biology.com/wp-content/uploads/2012/07/RedBloodCells3.jpg