Figure 1From: Cytological maps of lampbrush chromosomes of European water frogs (Pelophylax esculentuscomplex) from the Eastern UkraineFull set of lampbrush chromosomes from P. ridibundus (the lake frog) oocyte. Oocyte chromosome set consists of 13 lampbrush stage bivalents with 5 large lampbrush chromosomes and 8 lampbrush chromosomes of smaller size. Lampbrush chromosomes were lettered according to their comparative size. Phase contrast micrograph. Nu – extrachromosomal and chromosome associated nucleoli. Scale bar = 50 μm.Back to article page