Key;
Laboratory.;
of;
Plato;
Cell;
and;
Chromosome;
Engineering,;
Institute;
of;
Genetics;
and;
Developmental;
Biology,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100101,;
China;
of;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100049,;
China;
of;
Biological;
Sciences,;
University;
of;
Missouri-Columbia,;
MO;
65211-7400,;
USA;