SIGNAL PHARMACEUTICALS INC S-1/A

AMENDMENT #2 TO FORM S-1

EXHIBIT 10.32

EXHIBIT 10.33

EXHIBIT 10.34

EXHIBIT 10.36

EXHIBIT 10.38

EXHIBIT 10.41

EXHIBIT 10.42

EXHIBIT 10.46

EXHIBIT 10.48

EXHIBIT 10.49

EXHIBIT 10.51

EXHIBIT 10.53

EXHIBIT 23.1