6473
Subretinal administrations transfected mainly the pigmented cells of the retinal pigment epithelium and the light sensitive photoreceptor cells , whereas intravitreal injections transfected cells in the ganglion cell layer , blood vessels in the inner layers of the retina and photoreceptors .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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