Microvillar photoreceptors are intrinsically capable of detecting the orientation of e-vector of linearly polarized light.
Marko Ilić, Andrej Meglič, Marko Kreft, Gregor Belušič 2018, 'The Fly Sensitizing Pigment Enhances UV Spectral Sensitivity While Preventing Polarization-InducedArtifacts', Frontiers in Cellular Neurosciencehttp://journal.frontiersin.org/article/10.3389/fncel.2018.00034/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The microvillar and perimicrovillar membranes have densities (and protein content) that depend on the insect taxon.
Walter R. Terra, Rita H. Costa, Clélia Ferreira 2006, 'Plasma membranes from insect midgut cells', Anais da Academia Brasileira de Ciênciashttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000200007. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In the upper portion of respiratory epithelium, the enzymes were detected on ciliary and microvillar membranes.
MG Rambotti, G Altissimi, A Spreca 2009, 'Enzyme-ultracytochemical study of adenylate and guanylate cyclases in normal and pathologichuman nasal mucosa', European Journal of Histochemistryhttps://www.ejh.it/index.php/ejh/article/view/900. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)