The phrase "a complex group of" is correct and usable in written English.
It can be used to describe a collection of items, individuals, or concepts that are intricate or multifaceted in nature.
Example: "The research focused on a complex group of variables that influence climate change."
Alternatives: "a complicated set of" or "a diverse collection of".
Prostaglandins are a complex group of fatty acid derivatives that are produced and secreted by many tissues.
Head and neck cancers are a complex group of diseases defined by variations in histological features, anatomical location, and cause.
I use words like "company" as a shorthand for what is a complex group of organizations with varying degrees of self-sufficiency and operational independence.
Advanced head and neck cancer (HNC) is a complex group of diseases that requires the input and coordination of multiple providers.
Advanced vertebrate animals, a group that includes humans, defend themselves against such microorganisms by means of a complex group of defense responses collectively called the immune system.
Fibroblasts — connective tissue cells — secrete a complex group of polysaccharides and proteins that creates collagen, which gives the skin shape and elasticity and supports the blood vessels that permeate it.
For electric automakers, a major hurdle between concept and low-cost, high-volume vehicles involves the powertrain--a complex group of components that generate energy and transmit it to the wheels and road surface.
Lane-Fox said that it was not just an issue about infrastructure, but a "complex grouping of things".
Malaysia, an elongated land mass fingering down from the Indo-China peninsula to the city state of Singapore, is a complex grouping of people and religions: Malay 70percentt, Indian 5percentt, Indigenous people 5percentt, Chinese 20percentt.
Patients requiring long-term feeding tube access represent a particularly complex group of patients who stress the mechanisms placed within a healthcare system to optimize quality and safety.
In short, fibroblasts represent a multifaceted, complex group of cells.
