Scanning electron microscope (SEM) image. (A) Phage p2 particles binding to the recombinant L. paracasei expressing VHH2 anchored on the cell surface (approximately 20 times more binding than the control). (B) Control, L. paracasei containing only the vector pLP402 mixed with lactococcal phage p2. Arrows indicate the phage p2 particles. Bar = 1 μm.