Deletion of <i>pex3</i> in <i>P. chrysogenum</i> results in cells completely devoid of peroxisomes.

<p><i>P. chrysogenum</i> Δ<i>pex3</i> cells, producing GFP.SKL were grown for 40 h in PPM medium and analyzed by fluorescence (<b>A</b>) and electron (<b>B</b>) microscopy. Scale bars represent 5 µm in A and 1 µm in B; M-mitochondrion, N – nucleus.