Table 2. Vesicle movement prior to fusion with the plasma membrane.
| TOTAL | Unknowna | Fusions preceded by ∼1 µm linear displacement | Fusions in which linear displacement was undetectedb |
| 221 | 47 | 4 | 170 |
Vesicle movements prior to fusion with the plasma membrane were determined in 3T3-L1 adipocytes (n = 4 cells) transfected with mCherry-IRAP-pHluorin and stimulated with 100 nM insulin.
a
Vesicle movements were scored as unknown when high local vesicle density or low mCherry fluorescence intensity made determination of movement difficult.
b
Linear displacement of ∼1 µm or more was undetected prior to fusion of vesicle.