lignin

By varying the levels of two hormones in the gel, the researchers controlled the cells’ production of lignin, a polymer that lends wood its firmness.

Well, this deposit of lignin produced an oxygen surge in the atmosphere.

In the end, over 100 million years of dead trees and ferns and undigested lignin were deposited under the surface of the Earth.

Like tropical rains from a jungle roof, lignin dripped from the vaults, and in falling, burst into flames.

Down at his feet the spilled lignin formed a widening pool; it threatened to envelope his feet.

With the third blow the plastics cell cracked and the lignin poured out, a syrupy curtain sliding down.

They contained lignin-dynamite, with a very cheap clock arrangement for firing it.

In the second year the lignin alone increased to the end; the cellulose decreased at the end of June.