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`PK=camb.get_matter_power_interpolator(pars,zmin=98,zmax=100,nz_step=100,nonlinear=False,var1="delta_tot")`

I then tried to do the same with the CDM power spectrum, by setting changing

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`transfer_power_var=2`

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`PK=camb.get_matter_power_interpolator(pars,zmin=98,zmax=100,nz_step=100,nonlinear=False,var1="delta_CDM")`

so the power spectra are no longer the same. Am I right in expecting them to be the same, or am I attempting to get the CDM power spectrum the wrong way? Do var1 and var2 not select which fluids we want power spectra for?