During early ciliated-cell differentiation, up to nine daughter centrioles assemble simultaneously, either around one maternal template or in association with a matrix of electron-dense fibrous granules, called a "deuterosome" [33], [34].
The extracellular matrix had a paucity of electron dense material, and the sarcolemmal membrane was thin with numerous small discontinuities (arrow, Fig. 6B).
The high protein concentration in these organelles often results in the formation of electron dense inclusions or protein crystalloids in the peroxisomal matrix, e.g., in peroxisomes of plants or methylotrophic yeasts.
They were similar in size and shape of electron dense with a diameter of 60-120 [ 5].
The germ plasm is composed of electron dense granules, many mitochondria, and specific mRNAs and proteins.
ADAM: a disintegrin and metalloproteinase; ECM: extracellular matrix; EDS: electron dense structure; MMP: matrix metalloproteinase; PLZF: promyelocytic leukaemia zinc finger protein; SLE: systemic lupus erythematosus; TIMP: tissue inhibitor of metalloproteinase.
The distal part of the cilium is enclosed by a thin sheath of electron-dense extracellular matrix, which includes NOMPA [6], [17].
Some of sPD cybrid mitochondria contained inclusions of electron-dense amorphous substances within matrices that are thought to represent deposits of calcium and inorganic phosphates (denoted as filled triangles in Fig. 2Aj and k) (8, 20, 21).
Therefore, we used a cryosectioning method employing reagents devoid of electron-dense atoms.
Cytoplasms contained a variable amount of electron-dense inclusions, ranging from relatively small dyshomogeneous lysosomes to large irregularly dense inclusions.
The amount of electron-dense material varied from one vacuolar structure to another, and in general Type II neurites appeared more electron dense than Type I neurites.
