In order to get inside the cell, these molecules must pass through porins, which are protein channels that span the outer membrane. Antimicrobial resistance mechanisms in Pseudomonas aeruginosa Gram-negative bacteria possess proteins called porins in their outer membranes that, when altered, reduce or halt drug absorption.
The Code of Federal Regulations (CFR) is a codification (arrangement of) the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government. e-CFR Updated Daily; Beta Site.
Regulations for emissions from commercial trucks and buses (heavy-duty) 1  40 CFR part 1065. 2  Standard-setting part is 40 CFR part 86, subparts A and N for criteria pollutants, and. 3  40 CFR part 1036 for greenhouse gases.