The phrase "absence class" is not correct and does not convey a clear meaning in written English.
It may be intended to refer to a class or category of absence, but without additional context, it is unclear when to use it.
Example: "The absence class for this course includes excused and unexcused absences."
Alternatives: "absence category" or "type of absence".
Enhancer class is defined by the presence (class I) or absence (class II) of the histone mark H3K4me1 in their histone states.
Patients were assigned to classes based on the presence (Class A) or absence (Class B) of statistically significant invasion parameters to create an invasive imaging signature; imaging genomic analysis was subsequently performed using GenePattern Comparative Marker Selection module (Broad Institute).
The PR-4 protein classification is based on the presence (class I) or absence (class II) of the chitin ligation domain [ 35] also known as hevein-like domain – from the name of hevein, a small antifungal molecule present in Hevea brasilienses latex [ 36].
The PR-4 family of PR proteins consists of class I and class II chitinases, which differ by the presence (class I) or absence (class II) of a conserved N-terminal cysteine-rich domain corresponding to the mature hevein, a small antifungal protein isolated from rubber tree (Hevea brasiliensis) latex [ 44].
Defensins are produced as precursor molecules which are directed into the secretory pathway and are divided into two classes based on the absence (class I) or presence (class II) of an acidic C-terminal propeptide (CTPP) of about 33 amino acids.
In their absence, classes would be canceled.
The unexposed category indicated the absence of class 1, 2, and 3 roads.
Despite the absence of class analysis, the emergence of the middle class is widely believed to be conducive to social harmony, stability and its political legitimacy (Chen and Goodman 2013).
Absence of class II regulatory subunits and the recent origin of class I regulatory subunits is puzzling given that the class I/II catalytic subunit was present in LECA and has been conserved in most present-day eukaryotic lineages.
The absence of class II proteins in basidiomycetes may indicate that only the class I proteins may be important in basidiomycetes for fruit body formation.
Despite occasional references to the new left, there is a striking absence of class war in The Female Eunuch.
