Fig. 2From: Optimal process design space to ensure maximum viability and productivity in Penicillium chrysogenum pellets during fed-batch cultivations through morphological and physiological controlLeft: confocal microscopy of pellet with enhanced contrast depicting pellet diameter, viable layer (vl), compact core region (red circle) and hairy outer region (green circle). White line = 50 µm. Right: corresponding signal profiles from flow cytometry depicting a viable area across pellet diameter and b degraded area in the pellet’s core according to Veiter and Herwig [20]Back to article page