Is this part of your univity/Master/PhD/postdoc work? : )

Secretory responses of intact glomus cells in thin slices of rat carotid body to hypoxia and tetraethylammonium

an old paper: PNAS | February 29, 2000 | vol. 97 | no. 5 | 2361-2366

have been heavily cited

Google Scholar: sense "carbon dioxide" "Carotid body"
respiratory gases, hypoxia etc