Incubation

0

5

10

15

20

25 (µM)

4

1.15 ± 0.16

3.41 ± 0.41

3.11 ± 0.24^a

3.69 ± 0.38^a

2.19 ± 0.24^a

4.07 ± 0.24^a

6

1.29 ± 0.03

4.74 ± 0.99

3.98 ± 0.50^b

5.78 ± 0.46^b

4.79 ± 0.87^b

5.34 ± 1.32^a

18

1.10 ± 0.12

3.40 ± 0.11

3.24 ± 0.20^cd

3.19 ± 0.60^bc

3.18 ± 1.15

6.80 ± 0.75^b

24

1.07 ± 0.05

4.57 ± 0.21

5.74 ± 0.19^d

3.92 ± 0.34^bd

4.14 ± 0.62^c

7.14 ± 0.54^b