But no cone cells were observed in 10 of the 17 species, while only one type of cone cell appeared to be present in the other 7.
但是17种鲨鱼中有10种都没有视锥细胞，其他7种鲨鱼也都只具有一种单一的视锥细胞。
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The most affected country in the Southern Cone is Argentina, with the second-highest number of swine-flu-related deaths in the world (after the US) and 70% of the deaths in the Southern Cone.
Yet the sharks lacked cone cells, which respond individually to light at specific wavelengths. In human eyes, a variety of cone cells helps us to distinguish between colors.