The phrase "are electron dense" is correct and usable in written English.
It can be used in scientific contexts, particularly in discussions about materials or biological structures that have a high concentration of electrons.
Example: "The cells in this tissue sample are electron dense, indicating a high level of metabolic activity."
Alternatives: "have high electron density" or "exhibit electron density."
In electron micrographs of OTAP prepared drusen, lipid-containing components take the form of spherical or ovoid particles that are electron dense and dispersed (Figure 1B-1, B-2).
Sec bodies are electron dense structures and non-membrane bound, although small membrane profiles can occasionally be observed in their core and often ER is in close proximity.
On electron microscopy, nemaline bodies are electron dense and generally measure 1 7 μm in length and 0.3-2 μm in width.
For example, it is used in electron microscopy to fix and stain tissue samples and, since it is electron dense, it enhances the image contrast thereby making cellular structures easier to see.
Cytoplasm is electron dense, and periplasmic spaces may be observed (Fig. 5J).
Furthermore, the mitochondria differed from typical white adipocyte mitochondria (D), were electron dense with increased cristae.
These 'slimmed' adipocytes often contained multiple lipid droplets surrounded by increased mass of mitochondria which were electron dense.
These granules are electron-dense structures acting as a repository for factors required in germline formation.
Brp clusters calcium channels at AZs and stabilizes T-bars, which are electron-dense presynaptic structures that have been shown to facilitate synaptic release (Kittel et al. 2006).
Structural examination indicates adhesomes are electron-dense in C. elegans (13) and human (14) muscle, signifying the congregation of large amounts of proteins at these sites.
For the segmentation of synaptic junctions, Espina makes use of the fact that presynaptic and especially postsynaptic densities are electron-dense structures.
