He is done, after three falls there is no chance he will be able to finish.

He loved him so hard that he loved all his whiskers off, and the pink lining to his ears turned grey, and his brown spots faded. He even began to lose his shape, and he scarcely looked like a rabbit any more, except to the Boy.

(1) from the genomic library a clone of interest is selected and a small fragment is subcloned from one end of the clone

All's chared when he is gone.