This example demonstrates the use of a correlative relationship. Correlative relationships link abundances and biological processes when no causal relationship is known.
This statement expresses that an increase in cytoplasmic FGF2 protein positively correlates with an increase in the pathology Chronic Obstructive Pulmonary Disease. The subject and object terms of correlative statements are interchangeable. The
negativeCorrelation relationship is used to represent inverse correlative relationships, i.e., a decrease in A is correlated with an increase in B.