A NATURALLY-OCCURRING TRAP FOR ANTIPROTONSEades J, Morita N, Ito T. M, Ito Y, Kawachi A, Nakamura S. N, Hayano R. S, Iwasaki M, Shigaki K, Tamura H, Sugai I, Widmann E, Yamazaki T, Higemoto W, Nishida N, Hartmann F. J, Daniel H, Vonegidy T, Hofmann P, Kim Y. S