Sometimes we hear our human cells did not express a certain receptor in the hands of our customers. We guarantee our cell "walk and talk" as advertised. If you are ever in doubt. we will test for expression of any receptors or cytoplasmic proteins. We also do this as part of our quality checks.
Here're, for example, is a pub showing our Schwann Cells working. Note the receptors tested here. Seung Min Shin, Francie Moehring, Brandon Itson-Zoske, Fan Fan, Cheryl L. Stucky, Quinn H. Hogan, and Hongwei Yu. (2021). Piezo2 Mechanosensitive Ion Channel is Located to Sensory Neurons and Non-Neuronal Cells in Rat Peripheral Sensory Pathway: Implications in Pain. bioRxiv. doi: 10.1101/2021.01.20.427483