Coloured scanning electron micrograph (SEM) of Penicillium roqueforti - fungus used in cheese manufacture. Conidiophores (fruiting structure) and conidia (asexual spores) form at the tips of specialized hyphae. Penicillium roqueforti is used as a starter culture for blue-veined cheeses, being responsible for their flavour and colour. It is also a common spoilage organism in various foods. Magnification: x395 when shortest axis printed at 25 millimetres.
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