A and B, rats immediately shocked and removed (Shock/Remove, n = 8) showed no change in Ser-831 or Ser-845 phosphorylation compared with similarly handled, unshocked controls (Sham Control, n = 8) measured 1 h after training. C and D, rats trained after latent inhibition (Latent Inhibition, n = 8) showed no change in Ser-831 or Ser-845 phosphorylation compared with similarly treated, unshocked controls (Sham Control, n = 8) measured 1 h after training. E and F, rats trained in the presence of 0.4 mg/kg MK-801 (MK-801 Trained, n = 8) showed no change in Ser-831 or Ser-845 phosphorylation compared with similarly treated, unshocked controls (MK-801 Sham, n = 8) measured 1 h after training.