Fig. 4

Detection of native PDI8 specifically at the ER by immunoelectron microscopy. TEM analysis was performed on sections taken from the shoot apex (a), and the root apex (b), after primary labeling with rabbit anti-PDI8 antiserum and secondary labeling with 10 or 15 nm gold-conjugated goat anti-rabbit IgG antibodies (respectively). Labeling was detected at the endoplasmic reticulum (ER)