Emx2 and eIF4E associate with high-density structures in the olfactory bulb. Western blot analysis of Emx2 (A and B) or eIF4E (C) in LP2 after pretreatment of LS1 with proteinase K (PK), saponin (Sapo), N-octyl-glucoside, RNase A, or 1 M NaCl. LP2 obtained from the equivalent of four olfactory bulbs was loaded on each lane. Ctr, LP2 obtained from untreated LS1.