Figure 1.

TEM images of Brassica napus seed cotyledon cells. (A) Oil and protein are stored separately, black arrowheads indicate protein storage vacuoles (PSV) and the areas of PSV visualized with specific antibodies attached with gold particles; (B) with anti-cruciferin antibodies; and (C) with anti-napin antibodies. Antibodies-attached gold particles are the dark spots pointed out with orange arrows. Both cruciferin and napin are found in the same areas of PSV. (B,C) are 8× magnified as (A). Source: Wanasundara (unpublished).