Table 1.

Mitochondrial DNA haplotypes of all persons involved in processing Xiaohe samples.

Investigators	Sex	HVRI polymorphism site	Appendix
Excavators
1	Male	16189 16223 16278
2	Male	16093 16124 16223 16311 16316
3	Male	16223 16294 16362
4	Male	16223 16260 16298	*
5	Male	16092 16111 16261
6	Male	16300 16362
7	Female	16111 16129 16266 16304	*
8	Male	16221
9	Male	16126 16294 16296 16304
10	Male	16085 16209 16311
11	Male	16356
12	Male	16136 16356
Laboratory researchers
1	Female	16136 16183 16189 16217 16218 16239 16248	*
2	Female	16223 16245 16362 16367
3	Male	16183 16189 16223 16234 16290 16362
4	Female	16126 16174 16223 16311 16362	*
5	Male	16112 16223 16362
6	Male	16213 16223 16298 16327
7	Male	16189 16304

In the laboratory, the numbers 1, 2, 3 and 4 represent the staff participating in this study, 5, 6 and 7 represent the staff working in the laboratory but not directly concerned with this study. The *represents the primary researchers