The phrase "are mostly isolated from" is correct and usable in written English.
It can be used to describe a situation where a group or entity has limited interaction or connection with others.
Example: "The remote communities are mostly isolated from modern technology and urban life."
Alternatives: "are largely cut off from" or "are primarily detached from".
Saccharomyces cerevisiae, Saccharomyces bayanus and Saccharomyces pastorianus are associated with anthropic environments, whereas Saccharomyces paradoxus, Saccharomyces kudriavzevii, Saccharomyces cariocanus, Saccharomyces mikatae and the recently described Saccharomyces arboricolus are mostly isolated from natural environments [133, 134].
Members of the Shewanella genus are mostly isolated from seas and sediments and grow at low temperatures [22]; thus, swarming is most likely the dominant motility pattern of cells in such habitats.
The five domesticated species are mostly isolated from each other by sterility barriers and have different physiological characteristics.
Texas is mostly isolated from the rest of North America, in electricity terms.
Listeria was mostly isolated from the swap samples taken from the drains or the floors in processing or packaging areas.
Baguio was mostly isolated from surrounding areas as the main roads leading in and out of the city were blocked off.
Viruses isolated from January through March 2007 were, with 1 exception, clade 2.3.4 viruses, and were mostly isolated from passerine birds.
The former two were mostly isolated from the peripheral blood of the mice, and lymphocytes were extracted from the spleen.
Many of them, like C. elegans, were mostly isolated from artificial compost heaps, and their more natural habitat was unknown.
Those viruses were mostly isolated from wild bird species (swan and grebe), although a single isolate was from chicken in Krasnodar.
Lineages CHN-I, CHN-III, CHN-V were mostly isolated from Fagaceae trees in the rainforest of the tropical Hainan Island in the South China Sea.
