Il meristema è un tessuto vegetale le cui cellule mantengono la capacità di dividersi per mitosi per originare nuove cellule.

Ogni cellula meristematica deriva da un’altra cellula meristematicaI tessuti meristematici ) che mantenendo, o riacquistando in un secondo tempo, la loro capacità di divisione portano ad
una crescita indefinita dell’individuo-

I meristemi affermano idealmente il principio del continuo rinnovamento. Meristemia.

Invictus, W.E.Henley

Out of the night that covers me,
Black as the pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul.
In the fell clutch of circumstance
I have not winced nor cried aloud.
Under the bludgeonings of chance
My head is bloody, but unbowed.
Beyond this place of wrath and tears
Looms but the Horror of the shade,
And yet the menace of the years
Finds and shall find me unafraid.
It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate,
I am the captain of my soul.

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