Table 3. Gene expression assays.

Assay	References
Microarray	Gamerith et al. (2017), Brady et al. (2020)
RT-PCR	Henriksson, Gatenholm & Hägg (2017), Zhou et al. (2017), Lewis, Green & Shah (2018)
	He et al. (2020), Henrionnet et al. (2020), Brady et al. (2020)
	Devall et al. (2020), Schneider et al. (2020), Ciardulli et al. (2020)
RNA sequencing	Devall et al. (2020)
Flow cytometry	Zhou et al. (2017)
Immunohistochemistry/ immunofluorescence	Zhou et al. (2017), Henrionnet et al. (2020), Brady et al. (2020)
	Ciardulli et al. (2020), Schneider et al. (2020)