Based on the data presented above (Tables 1–4), one can estimate the number of different chains and types of building blocks of a typical average cluster. This estimated data is presented inTable 5 for clusters in large and small granules at 28 DAA (physio-logical maturity) and at 49 DAA (mature starch). These calculations suggested only very small differences in the average structures of clusters from A- and B-type granules with regards to both groups of building blocks and types of unit chains. The major difference was only, in fact, that the clusters in B-type granules at average had one more chain, and this was due to one more A-chain than in clusters from A-type granules. Based on this, a general model for clusters in both A- and B-type granules at 28 DAA is proposed in Fig. 3a. Thenumber of building blocks belonging to groups 2, 3, 4, and 5 are encircled and the categories of chains in the cluster are indicated.Group 6 building blocks was not included in the model because the numbers estimated for that group were extremely small (0.1)