Known Alternative Exons of Mus musculus Were Classified According to the Same Criteria
| Patterns (predicted) | Patterns (actual) | |||
| (A) cassette | (B) internal donor site | (C) internal acceptor site | (E) retained intron | |
| (A) Cassette | 26 | 0 | 0 | 0 |
| (B) Internal donor site | 2 | 5 | 0 | 0 |
| (C) Internal acceptor site | 15 | 0 | 9 | 1 |
| (E) Retained intron | 3 | 2 | 1 | 7 |
| Unclassified | 14 | 0 | 0 | 0 |
| Total | 60 | 7 | 10 | 8 |