Zebrafish Larva (IMAGE)
Caption
Blood vessels of a zebrafish larva: if the gene EGFL7 is lacking, the blood vessels (stained green) are not formed correctly. In genetically unchanged larvae which possess the EGFL7 gene, a substance that blocks EGFL7 leads to disturbances in vessel growth (above). In fish larvae without the EGFL7 gene, however, other genes compensate for the loss, so that the inhibitor hardly affects the growth of blood vessels (below).
Credit
MPI f. Heart and Lung Research
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