The genetic source and origin of pregnanes and 4-methyl steranes are discussed herein.

本文讨论了孕甾烷和4-甲基甾烷的生源和成因问题。

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To be clear, elements that do not identify source and origin of apparel and accessories do not qualify for protection under the US Trademark Act.

FORBES: Protecting Fashion Designs

Instead, trademark law protects brand names, logos, symbols, designs and other optional elements of apparel and accessories, and trade dress law protects the design, packaging or appearance of apparel and accessories, solely to the extent they identify the source and origin of such products.

FORBES: Protecting Fashion Designs