I want to do a third generation in vitro sex selection

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Option 1 (Direct and prominent):

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Option 2 (Slightly less prominent):

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Option 3 (More subtle, at the end):

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Option 4 (As a call to action in a conclusion):

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The best option will depend on the overall style and length of your article. Option 1 is the most straightforward, while the others offer more nuanced integration. Remember to ensure compliance with any relevant advertising regulations in your region.