{ diff(x1, t) = (1*k35*k4*x2*x8 + (-1)*k35*k9*x1*x3*k28/(k28 + x4) + (-1)*k35*k5*x1*x4/(k13 + x4) + (-1)*k35*(k14 + k15)*x1 + 1*k35*k27*x5*x10)/k35,
  diff(x2, t) = (1*k35*k1 + (-1)*k35*k2*x1*x2/(k3 + x2))/k35,
  diff(x3, t) = (1*k35*k6*x1*k29/(k29 + x4) + (-1)*k35*k7*x3/(k8 + x3))/k35,
  diff(x4, t) = (1*k35*k11*x6*x7 + (-1)*k35*k12*x4)/k35,
  diff(x5, t) = ((-1)*k35*k27*x5*x10 + 1*k35*k10*x8)/k35,
  diff(x6, t) = (-1)*k35*k34*k11*x6*x7/k35,
  diff(x7, t) = (1*k35*k16 + (-1)*k35*k17*x4*x7/(k18 + x7))/k35,
  diff(x8, t) = ((-1)*k35*k4*x2*x8 + (-1)*k35*k10*x8 + 1*k35*k19*x4/(k23 + x4)*k36)/k35,
  diff(x9, t) = 0,
  diff(x10, t) = (1*k35*k24 + (-1)*k35*k25*x1*x10/(k26 + x10))/k35 }