Fig. 1: Mitochondria are physically attached to the ER.
From: Miro2 tethers the ER to mitochondria to promote mitochondrial fusion in tobacco leaf epidermal cells

Consecutive TIRF microscopy images showing ER (magenta) either following a or separating b from a mitochondrion (mito, green) that has been optically trapped and moved using an automated routine; trapping laser power of 40 mW, moved 6 μm at 6 μm s−1. Scale bar indicates 5 μm, time is indicated in seconds (s). Cells were treated with latrunculin b.