Fig. 1. Bar diagram showing the percent level of total free amino acid (µg/mg), total protein (µg/mg), glycogen (mg/g), DNA and RNA (µg/mg), protease level (µmol tyrosine/mg protein/h) in nervous and hepatopancreas (HP) tissue of the freshwater snail Lymnaea acuminata after 96h exposure to 40% and 80% of LC₅₀ (24h) of methanolic extract of stem bark of Alstonia scholaris and 7 days of the withdrawal.

Fig.2. Bar diagram showing the percent level of total free amino acid (µg/mg), total protein (µg/mg), glycogen (mg/g), DNA and RNA (µg/mg), protease level (µmol tyrosine/mg protein/h) in nervous and hepatopancreas (HP) tissue of the freshwater snail Lymnaea acuminata after 96h exposure to 40% and 80% of LC₅₀ (24h) of binary combination of methanolic extract of Lantana indica+ Alstonia scholaris stem bark in 1:1 ratio, and 7 days of the withdrawal.