9: 713-716. 174. Lopes J V, JM Pacheco, D Dingli (2007). Acquired hematopoietic stem-cell disorders and mammalian size. Blood 110: 4120-4122. 175. Masuda N, H Ohtsuki (2007). Tag-based indirect reciprocity by incomplete social information. Proc R Soc B 274: 689-695. 176. Nowak MA, S Roch (2007). Upstre