Table 3.

Number fraction of cell types in 33 islet preparations determined by EM.

Cell Category	Definition*	Mean ± SEM	Range	COV
Total Islet (fIC)	nIC/nTC	0.483 ± 0.026	0.126 – 0.853	0.31
Beta (fβ)	nβ/nTC	0.356 ± 0.021	0.131 – 0.637	0.35
Non-Beta (fNβ)	nNβ/nTC	0.126 ± 0.10	0.036 – 0.269	0.44
Beta Cells in Islets (fβIC)	nβ/nIC	0.736 ± 0.017	0.410 – 0.839	0.13
Total Non-Islet (fNIC)	nNIC/nTC	0.517 ± 0.026	0.026 – 0.833	0.29
Acinar (fA)	nA/nTC	0.253 ± 0.018	0.054 – 0.416	0.40
Duct (fD)	nD/nTC	0.227 ± 0.015	0.016 – 0.384	0.37
Other (fO)	nO/nTC	0.038 ± 0.004	0.004 – 0.118	0.64

^*All symbols in tables defined in the Appendix.