SPIKE: a database of highly curated human signaling pathways. - Arnon Paz; Zippora Brownstein; Yaara Ber; Shani Bialik; Eyal David; Dorit Sagir; Igor Ulitsky; Ran Elkon; Adi Kimchi; Karen B. Avraham; Yosef Shiloh; Ron Shamir (Nucleic Acids Res., 2011)