This article refers to:
Volume 22, no. 7, p. 2111-2123, 2002. Page 2113, column 1, Fig. 1C: The number of tumors identified per number of injection sites should read as follows, from left to right: 6/6, 0/6, 0/6, 6/6, 0/6, and 0/6.
Page 2116, column 1, Fig. 4C: The number of tumors identified per number of injection sites should read as follows, from left to right: 0/6, 6/6, 0/6, and 6/6.
Page 2117, column 1, Fig. 5D: The number of tumors identified per number of injection sites should read as follows, from left to right: 0/6, 6/6, 0/6, and 6/6.