An employee holds a plant with roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. The farmers employed at the site in Laronxe are growing plants in a special way with a view to “milking” them for use in medicines, cosmetics and agrochemicals. Several major brands, including Germany's BASF and France's Chanel, have teamed up with Plant Advanced Technologies (PAT) in the hope of securing privileged access to the so-called “biomolecules” it extracts through the use of a patented technique. (Photo by Vincent Kessler/Reuters)

An employee walks between arrays of plants in a greenhouse at the Plant Advanced Technologies (PAT) company in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

An employee prepares the exudation of plants roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

Plants roots are misted with mineral salts at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

An employee holds a plant with roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

Plants roots are seen after being misted with mineral salts at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

An employee holds a plant with roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

Plants roots are pictured at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

Plants roots are seen after being misted with mineral salts at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

Plants roots are pictured at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

An employee inspects plants in a greenhouse of the Plant Advanced Technologies (PAT) company in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)

An employee prepares the exudation of plants roots at the Plant Advanced Technologies (PAT) company greenhouse in Laronxe near Nancy, Eastern France, June 19, 2015. (Photo by Vincent Kessler/Reuters)