[TERM REQUEST] Soft agar assay

**What would you use as label or labels for the terms?**
Soft agar assay

**What is the definition of the term?**
Soft agar assay

**Is there an ontology that has this term?**
https://bioportal.bioontology.org/ontologies/NCIT?p=classes&conceptid=http%3A%2F%2Fncicb.nci.nih.gov%2Fxml%2Fowl%2FEVS%2FThesaurus.owl%23C16215

**Additional context**
PlasticHEAL data
