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 ":".
Alternatively
,
ATRA
may
cause
the
maturing
myeloid
cells
to
acquire
the
ability
to
infiltrate
organs
such
as
the
lung
.
Alternatively:O
,:O
ATRA:other-chemicalthing
may:O
cause:O
the:O
maturing:O
myeloid:other-biologything
cells:other-biologything
to:O
acquire:O
the:O
ability:O
to:O
infiltrate:O
organs:O
such:O
as:O
the:O
lung:other-biologything
.:O