the enormous size of the fully differentiated thread cell , its apparent singular dedication to the production of ifs , the ease of isolating and purifying the threads and if subunits ( see accompanying paper ) , and the unique position of the hagfish in the phylogenetic scheme of vertebrate evolution all contribute to the attractiveness of the hagfish slime gland thread cell as a potential model system for studying if subunit synthesis , if formation from if subunits , aggregation of ifs into if bundles and the interaction ( s ) of ifs and mts .
C0007634
cell
C0021770
ifs