With no explanation, label each line with "O", "other-chemicalthing", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
However
,
if
multiple
acetylation
sites
are
blocked
,
the
expression
of
p21
and
the
suppression
of
cell
growth
caused
by
p53
is
completely
lost
.
However:O
,:O
if:O
multiple:O
acetylation:other-chemicalthing
sites:O
are:O
blocked:O
,:O
the:O
expression:O
of:O
p21:other-biologything
and:O
the:O
suppression:O
of:O
cell:O
growth:O
caused:O
by:O
p53:other-biologything
is:O
completely:O
lost:O
.:O