This is due to the reduction of excitatory synaptic transmission in a nucleus and the increased excitability in the motor neurons caused by nicotine activation .
This is due to the reduction of nicotine transmission in a nucleus and increased excitability in the motor neurons caused by an excitatory synaptic activation .

Are these two sentences paraphrases of each other?
no

Twenty-one churches are currently in seven states ( West Virginia , Kentucky , North Carolina , Ohio , Tennessee , Virginia , and Arkansas ) .
There are currently twenty-one churches in seven states ( West Virginia , Kentucky , North Carolina , Ohio , Tennessee , Virginia , and Arkansas . )

Are these two sentences paraphrases of each other?
yes

The IAA became active again in liberal politics when the Federal Government published its White Paper policy in 1969 .
The IAA again became active in federal politics when the Liberal government released its White Paper Policy in 1969 .

Are these two sentences paraphrases of each other?
no

However , mice survived with a non-working copy of the single TWIST - Gens .
Mice with a single copy of the non-working TWIST - Gens survived , however .

Are these two sentences paraphrases of each other?
no