"Different subclasses" refers to categories or groups that fall under a larger class or category. Each subclass has unique characteristics or qualities that set it apart from other subclasses within the same class. Full definition
For distinguishing between two or more different subclasses of mouse IgG in multiple - labeling experiments, or for mouse IgG subclass determination. (jireurope.com)
«Spikes are the language of the nervous system and we wanted to know if the different «dialects» conformed to different subclasses of neurons and if we could characterize those subclasses.» (janelia.org)
If you slice up the total market and equally weight all the different subclasses, you get a much much higher return with comparable volatility: (noroboinvestor.com)