PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1689262-3	1990	Furthermore, since explanted animal pole cells can be induced to differentiate into cement gland cells in vitro by incubation in NH4Cl, we have demonstrated the in vitro induction of XK endo B, maintenance of XK70, and repression of another embryonic epidermal keratin, XK81.	Ammonium Chloride	129-134	70a	Xenopus laevis	261-268