Biosimilars Stelara

He is prone to allergic reactions so stopping to try biosimilars before being allowed to go back to Stelara is less than ideal
Researching the cells used in making these .
Ds has had anaphylaxis to remicade (murine) and kineret (ecoli ) . Ok with humira /ilaris
My question proteins the cells are started on
The Ustekinumab is expressed in an Sp2/0 cell line system, whereas some biosimilars are expressed in a Chinese hamster ovary…