Fig. 3

Cell morphology of L. lactis IPLA947 and the Lcn972R derivative L. lactis R5. Phase contrast microscopy of L. lactis IPLA 947 (a) and L. lactis R5 (b) sampled during growth in the presence of oxygen. Length (c) and width (d) of cells of L. lactis IPLA947 (grey) and L. lactis R5 (white) from exponentially and stationary (24 h) aerated cultures and exponentially growing batch cultures. (*) P < 0.05; (***) P < 0.001, significantly different from L. lactis IPLA947