The phrase "are divided into subtypes" is correct and usable in written English.
It can be used when discussing classifications or categories within a broader topic, indicating that the main category can be further broken down into smaller, distinct groups.
Example: "The species of birds are divided into subtypes based on their migratory patterns."
Alternatives: "are categorized into subtypes" or "are classified into subtypes."
H.I.V. strains that are transmitted in various areas of the world differ genetically and are divided into subtypes.
Influenza A viruses are divided into subtypes based on their hemagglutinin (H1 to H15) and neuraminidase (N1 to N9) glycoproteins.
Avian influenza virus (AIV) strains are divided into subtypes based on serological reactions of the two surface glycoproteins, the hemagglutinin (HA) and neuraminidase (NA).
Influenza A viruses are divided into subtypes according to the serologic reactivity of the surface glycoproteins hemagglutinin (H1 H16) and neuraminidase (N1 N9).
SVAs are divided into subtypes (A-F) by the SINE region and their age estimated at 13.56Myrs old for the oldest subtype (A) and 3.18Myrs old for the youngest subtype (F) [ 5].
Type A is divided into subtypes, which are differentiated mainly on the basis of two surface antigens (foreign proteins)—hemagglutinin (H) and neuraminidase (N).
Only one of the 15 forest types was divided into subtypes.
METHODS: Patients with delirium (n=114) were divided into subtypes based on consultation requests for the management for cognitive dysfunction [altered mental status (AMS), n=46], for agitation or behavior disturbance (BEH, n=26), for depression (DEP, n=18), and for all other reasons (MISC, n=33).
According to its histological appearance, RCC can be divided into subtypes: conventional or clear cell, papillary, chromophobe, and unclassifiable RCC [14], [15].
Influenza A viruses are negative-strand RNA viruses of the family Orthomyxoviridae which can be divided into subtypes based on the antigenic properties of the surface glycoproteins, hemagglutinin (HA) and neuraminidase (NA) [1].
Samples were divided into subtypes based on PAM50 gene signature (Parker et al., 2009 ).
