Antagonist antibodies are characteristic of what autoimmune disorder?

Time series, cross-correlation, and ACF plots for series A and series B are below.  The ACF plot for series A indicates it could be modeled as an MA process.

Time series, cross-correlation, and ACF plots for series A and series B are below.  Series B appears to be trending upward until about 2015.

The surface area of the mucosa is ____ that of the skin.

You are more likely to develop MS if you live ____ the 37th parallel.

All of the following describe mucous membranes, except: 

Which of the following is NOT a systemic autoimmune disorder?

The first step in determining tissue compatibility is:

Find the spectral density function for the MA(1) process {X_t} constructed by 

This Ab is found in the highest concentration in the mucosa