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Chloroplasts within sbe2a leaves are misshapen and contain large, irregular starch granules. TEM micrographs of chloroplasts are shown within bundle sheath cells from Sbe2a wild-type leaves (A), green tissue from sbe2a mutant leaves (B) and visibly senescing tissue from sbe2a mutant leaves (C). Starch granules (St), plastoglobules (Pg), and vacuoles (Vc) are indicated with arrows. Bars = 2 μm.
