The phrase "a microscopic cluster of" is correct and usable in written English.
It can be used to describe a very small group or aggregation of something, often in scientific or technical contexts.
Example: "The researchers discovered a microscopic cluster of bacteria that had developed resistance to antibiotics."
Alternatives: "a tiny group of" or "a minuscule collection of".
7 After intravenous injection of NIR fluorescent probes, we performed surgery guided by intraoperative imaging using a wide field-of-view imaging device capable of resolving microscopic clusters of tumor cells.
Barkhausen effect, series of sudden changes in the size and orientation of ferromagnetic domains, or microscopic clusters of aligned atomic magnets, that occurs during a continuous process of magnetization or demagnetization.
But it has also produced tens of thousands of human embryos, microscopic clusters of cells, frozen in tanks in laboratories around the nation.
Microscopic clusters of tissue debris were flung off the valve's shaggy edges into the student's bloodstream and carried throughout his body.
They're also working on a material called a metal organic framework, whose properties can be systematically changed by varying the composition of organic materials that link microscopic clusters of metal.
Stem cells, which are extracted from embryos when the embryos are still microscopic clusters of cells, have the potential to grow into any of the body's more than 200 cell types.
Some microscopic clusters of similarly oriented magnetic atoms aligned with the external magnetizing field increase in size by a sudden aggregation of neighbouring atomic magnets; and, especially as the magnetizing field becomes relatively strong, other whole domains suddenly turn into the direction of the external field.
All the wonders of our modern tech-based world have their base in these microscopic clusters of transistors, memory cells, and logic gates.
In a report published in February in the American Journal of Respiratory and Critical Care Medicine, the Johns Hopkins scientists described their research on what was behind the microscopic clusters of inflamed tissue and white blood cells, or granulomas, that are a defining feature of sarcoidosis.
