Figure 4

B3gnt5 expression in pre-implantation embryos. All pre-implantation stages investigated show the uniform presence of B3gnt5 transcripts up to the morula stage. B3gnt5 transcripts were confined to the inner cell mass at the blastocyst stage. Sense and antisense RNA probes were DIG-labeled as described in the Materials and Methods section. The pictures show embryos taken from C57Bl/6 wildtype matings.