SN4 ""

No	Pattern	Freq
1	obtained from [noun]	392
2	obtain from [noun prp]	160
3	obtain from [noun pl]	127
4	obtain from [noun sg]	117
5	obtain from patients	14
6	obtain from patient	14
7	obtain from dr	12
8	obtain from dr	12
9	obtain from plant	8
10	obtain from [noun]	7
11	obtain from [letter]	6
12	obtain from amersham	6
13	obtain from plants	6
14	obtain from amersham	6
15	obtain from sigma	6
16	obtain from sigma	6
17	obtain from mr	5
18	obtained from [noun]	5
19	obtain from [n mass]	5
20	obtain from study	5
21	obtain from mr	5
22	obtain from rat	5
23	obtain from rats	5
24	to obtain from [noun]	5