Before revision:  The resulting dynamics are highly diverse, lead to local calcium ``puffs'' as well as global waves propagating through cells, as observed in {\it Xenopus} oocytes, neurons, and other cell types.
After revision:  The resulting dynamics are highly diverse, lead to local calcium "puffs" as well as global waves propagating through cells, as observed in {\it Xenopus} oocytes, neurons, and other cell types.