The lick starts with a very typical triplet going up to the minor third. Using the minor third (Eb) in a major C-chord makes the solo feel "bluesy". It is quite common to use the the minor third thrugout a melody. In this example we are using both the minor and the major. As mentioned befor the Eb fits nicely into the F-scale where it forms the minor 7th.
This is a simple lick playing on both the Eb and E. In bar 1 the melody moves over the tones of the C-chord, while in bar 5 it moves to the tones of the F chord in bar 9 the notes of the G chords are used. Here the minor and major third of the G is used.