Exemptions for Reporting under the Securities and Exchange Act: Section 13B of the 1934 Securities Exchange Act provides that with matters pertaining to national security of the United States, the Executive Branch has the authority to exempt certain companies from the critical legal obligations outlined in the act.ection 13B of the 1934 Securities Exchange Act provides that with matters pertaining to national security of the United States, the Executive Branch has the authority to exempt certain companies from the critical legal obligations outlined in the act.
Eukaryotic Exceptions. Most eukaryotic cells -- those that contain nuclei -- also contain mitochondria, but there are exceptions to this rule. Some parasitic protists, for example, take energy from their hosts and do not have mitochondria, as explained by an article in the Journal of Eukaryotic Microbiology. In humans, mature red blood cells, or erythrocytes, lack mitochondria as well, as reported by the Encyclopedia Britannica.
A couple of responses have suggested using rho0 cells. These cells have no mtDNA and therefore no respiratory function, However, they do have mitochondria, a relatively normal mitochondrial membrane potential, and stain with MitoTracker dyes comparable with normal cells.