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The activity of the transcription factor BrlA results in different conidiophore morphological patterns in Aspergillus nidulans (scanning electron micrograph) (image by G. H. Braus) (A) and Penicillium chrysogenum (light microscopic image) (image by U. Kück) (B). The P. chrysogenum conidiophore shows a simpler structure, lacking a multinucleated vesicle and producing fewer metulae (M), phialides (P), and conidia (C).
