Sentence 1: A ratio of 2.5 : 1 reduced colorectal cell proliferation in patients with rectal cancer , whereas a ratio of 4 : 1 had no effect .
Sentence 2: A 2.5 : 1 ratio reduced colorectal cell proliferation in patients with rectangular cancer , whereas a 4 : 1 ratio had no effect .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?