The phrase "and involves a single" is correct and usable in written English.
It can be used when describing a process, activity, or situation that includes only one element or participant.
Example: "The experiment is straightforward and involves a single variable to ensure accurate results."
Alternatives: "and includes one" or "and consists of a single".
One, called psychedelic therapy, was based on Osmond and Hoffer's work, and involved a single large dose of LSD alongside psychotherapy.
Prior to 1998, occasional BT outbreaks had occurred in Europe, although in most cases these were relatively short lived (∼4 5 years) and involved a single BTV strain/serotype on each occasion (reviewed by Mellor et al. [34]).
Prior to 1998, outbreaks of BT had occasionally been detected in Europe, although in most cases these were relatively short lived (∼4 5 years) and involved a single BTV strain/serotype on each occasion (reviewed by Mellor [18]).
(American Psychiatric Association, 1968 : 46) … physical symptoms that are caused by emotional factors and involve a single organ system, usually under autonomic nervous system innervation.
These 'psychophysiological disorders' are characterized by … physical symptoms that are caused by emotional factors and involve a single organ system, usually under autonomic nervous system innervation.
We also uncovered 13 parent progeny mismatches that were better explained as de novo mutations; each mismatch occurred in a different progeny array, and involved a single allele and a single offspring from each array.
Therefore, HGMD will include such variations if they have been shown to be both of functional significance and associated with disease, and involve a single characterized gene that has itself been directly implicated in the disease association.
They included sensory deprivation and involved "a single-minded, consistent, totally focused questioning of current threat information".
It is also known as "scale up" and it usually involves a single instance of an operating system.
