From: Callyspongia crassa and C. siphonella (Porifera, Callyspongiidae) as a potential source for medical bioactive substances, Aqaba Gulf, Red Sea, Egypt
Extract
Concentration (μg/ml)
0
25
50
100
200
400
800
Ascorbic acid
0.0
77.41
93.6
C. crassa
3.5
11.7
17.7
21.1
32.9
58.1
S. siphonella