What is the difference between CLO:0050405 and CLO:0050406?

[cthoyt]

The following two entries in CLO both appear to be the same immortal cornea-derived cell line, with the same xrefs and only a few different words in the description. Can they be merged?

• https://www.ebi.ac.uk/ols4/ontologies/clo/classes?iri=http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FCLO_0050405
• https://www.ebi.ac.uk/ols4/ontologies/clo/classes?iri=http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FCLO_0050406

I have similar questions for the others here too:

clo:0007050	K 562 cell	skos:exactMatch	cellosaurus:0004	K-562	80%
clo:0007059	K-562 cell	skos:exactMatch	cellosaurus:0004	K-562	80%
clo:0037372	HEK293T cell	skos:exactMatch	cellosaurus:0063	HEK293T	80%
clo:0050894	RCB2202 cell	skos:exactMatch	cellosaurus:0063	HEK293T	80%
clo:0050405	RCB2280 cell	skos:exactMatch	cellosaurus:1272	HCE-T	80%
clo:0050406	RCB1384 cell	skos:exactMatch	cellosaurus:1272	HCE-T	80%
clo:0007634	MDA-MB-231 cell	skos:exactMatch	efo:0001209	MDAMB231	80%
clo:0037291	MDAMB231 cell	skos:exactMatch	efo:0001209	MDAMB231	80%
clo:0009034	SK-BR-3 cell	skos:exactMatch	efo:0001236	SKBR3	80%
clo:0037295	SKBR3 cell	skos:exactMatch	efo:0001236	SKBR3	80%
clo:0009040	SK-MEL-1 cell	skos:exactMatch	efo:0002332	SKMEL1	80%
clo:0037292	SKMEL1	skos:exactMatch	efo:0002332	SKMEL1

[cthoyt]

cc @yongqunh