By extension the dog latin phrases 
In vivo - within the living
In vitro - in glass (Petri dish, test tube, etc)
we now have
In silico - in computer.

In silico computer based techniques (such as data analysis,
correlation studies, etc.) are increasingly important to biologists.

Mycoplasma happily live on microbiology media used to grow cell
cultures.  After all they have been designed to provide an ideal
environment in which microbes can grow.  Mycoplasma are tiny almost
transparent and so hard to detect, but once an experiment has been
contaminated with Mycoplasma its results may be useless.  The problem
of contamination is widespread and has been increasingly recognised.
Microbiologists now well understand the problem of bacterial
contamination in microbiology labs.  Many labs routinely sterilise all
their glassware, whether Mycoplasma have been found in the lab or not.
However the corresponding problem of computer database corruption has
received less attention.

Prominent Laboratories exchange microbiology samples.
This takes place globally at jet aircraft speed.
There are many global biology and bio-medicine databases.
They are all linked via the Internet and routinely exchange updates.
Such "in silico" exchanges take place at the speed of light.

Thus contaminated data may be uploaded in Japan 
to the Japanese data bank.
Then be automatically copied from DDBJ to Washington
and from NCBI distributed across the planet.

Although Biolgists sterilise their wet labs,
they may not even think to clean the data in their computers.