Maternal behavior displayed by AKR and C3H mothers toward C57 and DBA pups.

<p>Graphs show the percentage of time spent in pup licking, nursing posture and nest reorganizing activity with C57 pups (left panels) and DBA pups (right panels) averaged over 4 postnatal days (PD 2, 4, 6 and 9). Behavior of the reference mothers (bio mothers) is shown as horizontal hatched bands. Bars represent mean±SEM. AKR mothers (white bars) <i>n</i> = 9 dams for each pup strain. C3H mothers (black bars) <i>n</i> = 7 dams for each pup strain. Bio mothers (hatched bands) <i>n</i> = 15 for C57 dams and <i>n</i> = 8 for DBA dams. * p<0.05, ** p<0.01 and *** p<0.001 compared to C3H mothers. # p<0.05, ## p<0.01 and ### p<0.001 compared to bio mothers.