Figure 9.

Concentration-invariant odor coding in AOB and VNO: training and testing on different dilutions. A, Train to classify male and female urine on two strains (BALB/c and CBA) at one dilution (for AOB). Resultant linear directions (LDs) from this dilution were used to test on the other two dilutions. Horizontal axis, Dilution of the test urine in Ringer's control (RC); vertical axis, classification accuracy. Black line (control), Train and test classifier at the same urine dilution. The horizontal position for some circles was shifted by a small amount to reduce overlap. B, Same as in A, but for VNO.