An important but unexplored and difficult type of experiments are those that attempt interaction of the transmitted pump wave with natural (free) energy sources (Leyser and Wong 2009), including pump-induced Langmuir turbulence interacting with auroral electron precipitation or naturally enhanced ion acoustic waves.
For certain sexually transmitted diseases, AIDS/HIV for example, it is natural to consider two groups of people: a group of males and a group of females.
However, most directly transmitted infections of entire influenza viruses from a natural host species to a new host species do not result in sustained transmission in the new host species (3 ).
If you are on birth control and both you and your partner have recently been tested for sexually transmitted diseases, then try having sex the au natural way.
Using the natural reflectivity of ceilings and walls, a transmitted infra-red signal can be received by any number of receivers within a room.
These studies provide new insight into the complex interaction between two common human sexually transmitted viruses in an in vitro system, modeling their natural host tissue in vivo.
We also use the transmitted sound waves from distant earthquakes, the temporal fluctuations of natural electrical fields in the Earth, and small spatial variations of Earth's gravitational and magnetic fields for the same purposes.
According to the law of 2005, MAR represents a "medical necessity" in case of limitation in natural procreation or if there is a risk to transmit a sexually transmitted disease or a hereditary disease to the child.
Use caution, however, because natural skin condoms do not prevent infection of sexually transmitted diseases, although they do protect from pregnancy.
As a consequence, natural selection can sometimes act on pools of co-transmitted variants, resulting in the concealment of deleterious or lethal mutations by trans-complementation with co-infecting genomes, or in the exposure of high-fitness alleles to purifying selection.
