there were measurable ige antibodies against the different products.

How would the previous sentence be correctly capitalized?
Answer: There were measurable IgE antibodies against the different products.
perhaps such phenomena as synchronicity, premonitions, visions, shamanistic encounters, ghosts, and encoded signs from the dead could constitute evidence of these parallel worlds.

How would the previous sentence be correctly capitalized?
Answer: Perhaps such phenomena as synchronicity, premonitions, visions, shamanistic encounters, ghosts, and encoded signs from the dead could constitute evidence of these parallel worlds.
the affected person should be placed horizontally at once, with the legs elevated, to make sure that the brain and heart are adequately perfused.

How would the previous sentence be correctly capitalized?
Answer: The affected person should be placed horizontally at once, with the legs elevated, to make sure that the brain and heart are adequately perfused.
i play computer / digital games that i can play offline

How would the previous sentence be correctly capitalized?
Answer: I play computer / digital games that I can play offline