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         <ModelHeader Author = "Tyson" ModelVersion = "1.0" ModelTitle = "untitled"/>
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   <!--  Model Starts Here  -->
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            <note value = "A model of the cell cycle based on the interactions between cdc2 and cyclin. The model has six dynamic variables: C2 (cdc2); CP (cdc2-P complex); pM (P- cyclin-cdc2-P complex); M (active MPF, P-cyclin- cdc2 complex); Y (cyclin); and YP (cyclin-P) . Total cyclin concentration (YT) is the sum YT=Y+YP+pM+M4"/>
            <note value = ""/>
            <note value = "Reference:"/>
            <note value = ""/>
            <note value = "Tyson JJ, (1991) . Modeling the cell division cycle: cdc2 and cyclin interactions. PNAS, 88: 7328-7332. "/>
            <note value = ""/>
            <note value = "Generated from "/>
            <note value = ""/>
            <note value = "Cellerator Version 1.0 update 2.1125 using Mathematica 4.2 for Mac OS X (June 4, 2002), November 25, 2002 14:40:28, using (PowerMac,PowerPC, Mac OS X,MacOSX,Darwin)"/>
            <note value = ""/>
            <note value = "by B. E. Shapiro"/>
            <note value = ""/>
            <note value = " "/>
            <note value = " "/>
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