I can find in NEB website that they are resistant to streptomycin (https://www.neb.com/-/media/nebus/files/brochures/compcell_brochure.pdf). But these cells available on NEB are derivative of DH10 beta cells (https://www.neb.com/products/c3019-neb-10-beta-competent-e-coli-high-efficiency#Product%20Information). Is this streptomycin resistance applicable to all DH10 beta cells.