text: Yo, peep the role of calcium
  In the mechanism of thrombin activation, word
  Bone marrow-derived mast cells, BMMC, yeah
  We're measuring the changes, keeping it real
  
  45Ca2+ uptake, check it out, fam
  Quiescent BMMC, waitin' for the jam
  Thrombin or IgE-antigen, that's the game
  Activate these cells, and watch 'em change
  
  Ca2+-dependent, that's the key
  Thrombin or IgE, that's what we see
  One million BMMC, count 'em all
  Activated by thrombin, rise or fall
  
  0.05-5 U thrombin, that's the dose
  Concentration-dependent, watch it close
  45Ca2+ accumulates, level up
  1 U thrombin, that's when it's enough
  
  Thrombin-stimulated cells, they're on fire
  45Ca2+ uptake, saturates, admire
  Histamine release, that's the deal
  Kinetics match up, it's for real
  
  IgE-antigen cells, they keep going strong
  45Ca2+ uptake, five minutes long
  Thrombin's action, it's a different zone
  Distinct from IgE, on the surface alone