| Table 1 | |||
| Quantitative
      Use (%) of Core Units by Component Research Project (Year 1) | |||
|   |   |   |   | 
|   |   | Core Unit | |
|   Investigator |   Project |   Neurohistology | Genotyping
      and Mouse Colony | 
| Rosen | 1 | 40% | 40% | 
| Williams | 2 | 40% | 0% | 
| Nissanov | 3 | 20% | 0% | 
| Manly | 4 | 0% | 60% | 
|   |   | 100% | 100% |