Fig. 8
From: Levels and building blocks—toward a domain granularity framework for the life sciences
Top-Level Subclasses of ‘portion of matter entity’. The entities of each building block level, except for the coarsest level of epithelially-delimited multi-cellular organisms, can be represented as a respective portion of matter entity in coarser spatio-structural frames of reference. Therefore, ‘portion of matter entity’ is differentiated into building block level specific subclasses. Further differentiations are shown for the classes ‘portion of molecule entity’ and ‘portion of eukaryotic cell entity’, which are based on whether the entity is a self-connected portion of matter, for instance, a portion of ECM or a portion of connective tissue, or a group of scattered portions, for instance, the group of portions of muscle tissues in a human being