(Source: BMDP manual, p. 395)

An experiment was carried out wherein varying doses of 
Rose Bengal, an enzyme, was used as a catalyst for the 
production of an protein substrate.  The concentration
of the substrate was measured spectrophotometrically.
The first column of the data represents the dose of the
enzyme, and the second column the spectrophotometric
response.  The equation proposed for the data is


                       v * dose
     response  =     ------------ , 
                      (k + dose)

where v and k are the parameters to estimated.  (This equation
is known as the Michaelis-Menten model for the velocity of an
enzyme catalyzed reaction.)