lysis and separation approach is successfully integrated inthe presented microfluidic chip. The LOC is designed for the manip-ulation of mammalian cells for dynamic metabolic analysis in cellcompartments (Fig. 2). Cells are harvested from a bioreactor at anydesired state in the cultivation cycle and mixed on-chip with aglucose containing culture medium for cell perturbation. This risein glucose concentration triggers a higher rate of metabolic activ-ity within the cells. After a defined incubation time for metabolicprocesses under physiological conditions (37◦C), the cells enterimmediately the cooled part (4◦C) of the chip, were the sampleis quenched in order to decelerate the metabolism. Subsequently,the sample is mixed with the chemical cell lysis detergent digi-tonin in a second micromixer. A sufficient incubation time is neededto allow chemical lysis and diffusion of cytoplasm out of the per-meabilized cell membrane. The mitochondria remain in the ghostcells and can be finally separated from the cytoplasm in a parti-cle separator and media exchanger. A wash medium is injectedfor this purpose to the chip in order to replace the initial culturemedium, which at this stage contains besides glucose also digitoninand cytosol.