The phrase "a decreasing density of" is correct and usable in written English.
It can be used when describing a reduction in the concentration or amount of something over a certain area or volume.
Example: "The study observed a decreasing density of trees in the deforested region over the past decade."
Alternatives: "a diminishing concentration of" or "a declining amount of".
A decreased density of dopamine D1-like receptors was found in the stratum oriens of CA1 and CA3 subfields.
CNTN-6 deficient mice show increased numbers of immature granule cells in the internal granule cell layer (IGL) and a decreased density of parallel fiber synaptic terminals in the cerebellum (Sakurai et al., 2009).
Finally, MR performances of the PS/Fe3O4 based MR fluid were investigated via a rotational rheometer and sedimentation stability was found to be improved with a decreased density of the synthesized microbeads.
In the calculations, we show that dot in island potential leads to a decreased density of states for holes in the islands and, thus, to shift of the island PL emission even at moderate P exc as observed in Fig. 3.
These include a decreased density of 5-HTR1A sines in the dorsal hippocampus (CA1) and in the septum in 5-HTR4 KO mice, in baseline condition [35].
Immunohistochemical analysis with antibodies against ionized binding calcium adapter molecule 1 (Iba-1) (Fig. 4E H) revealed a decreased density of Iba-1-positive macrophages and/or microglial cells in the tissue surrounding L1 overexpressing grafts when compared to wild-type grafts or sham-injected PBS.
Chakrabarti et al. reported a decreased density of anionic sites in the retinal basement membrane of BB rats [ 20].
In accord with a decreased density of SGCs, synaptic connections to hair cells are lost, providing an explanation for the observed high-frequency threshold shift.
Blockade of VEGFR3 with VEGFR3-Ig decoy receptor protein led to a decreased density of lymphatic capillaries, which was associated with total inhibition of lymph node metastasis.
It is essential to highlight that a decreased density of capillaries was observed only in patients with the second type of videocapillaroscopic pattern.
