Table 4.
Expression of Wnt and Fzd genes in the embryonic olfactory system
| RT-PCR |
In situ hybridization |
RT-PCR |
In situ |
||
|---|---|---|---|---|---|
| WT OB | WT OB | WT AFS | WT OE | WT OE–VNO | |
| Wnt2a | +/− | − | − | + | +/− |
| Wnt2b | + | − | + | + | + |
| Wnt3 | ++ | +b | − | +/− | +/−b |
| Wnt4 | ++ | ++ | +/− | + | + |
| Wnt5a | ++ | ++c | − | + | − |
| Wnt5b | ++ | ++c | ++ | + | + |
| Wnt6 | + | ++b | − | + | + |
| Wnt7a | +++ | nd | nd | − | nd |
| Wnt7b | +++ | +c | − | + | + |
| Wnt9a | + | ++b | − | + | + |
| Wnt11 | +/− | − | ++b | + | +/−b |
| Fzd1a | ++c | − | − | ||
| Fzd3 | +b | − | + | ||
| Fzd4 | +/− | +/− | +/− | ||
| Fzd7 | − | ++ | − | ||
| Fzd9 | +c | − | − | ||
+++, High; ++, present; +, low; −, absent; nd, not done.
aAdditional Wnt and Fzd genes examined but not included in this list because expression was undetectable: Wnt1, Wnt3a, Wnt8a, Wnt8b, Wnt9b, Wnt10a, Wnt10b, and Fzd5.
bWidespread expression.
cVentricular zone of the embryonic OB.