Fig. 3From: Construction of Lactobacillus casei ghosts by Holin-mediated inactivation and the potential as a safe and effective vehicle for the delivery of DNA vaccinesCharacterization of L. Casei and L. Casei ghosts by TEM and SEM. a Native L. Casei examined by TEM. b Loss of cytoplasmic material of L. Casei ghosts examined by TEM. Bar = 500 nm. c Naive L. Casei examined by SEM. d L. Casei ghosts examined by SEM. Note the presence of transmembrane lysis tunnelsBack to article page