Fig. 4
From: An intimate view into the silica deposition vesicles of diatoms
Valve development in T. pseudonana. Different valve SDVs were imaged by TEM and ordered based on the stage of silica structure formation. For each valve, an overview image (top row) and a corresponding detail image (bottom row) is shown. Colored arrows highlight characteristic biosilica features: green = annulus, blue = costa, red = cribrum pore, yellow = fultoportula, orange = areola pore. Scale bars: 1 µm (overview images), 400 nm (detail images)