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The results showed that mRNA expressions and activity of antioxidant enzymes in neonatal rat lens before eyelid opening were the highest and then decreased with age , and revealed by transmission electron microscopy ( TEM ) using lanthanum hydroxide as tracer that higher selenite content entering eyes injured lens and resulted in cataract formation for immature BRB before eyelid opening , moreover , a little selenite content entering eyes was not enough to induce cataract formation after eyelid opening because of mature BRB .
 Chemical: lanthanum hydroxide; Chemical: selenite; Chemical: selenite
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: lanthanum hydroxide; Chemical: selenite; Chemical: selenite