Make sure the tattoo artist removes a needle and tubes from sealed packages before your procedure begins. Any pigments, trays and containers should be unused as well.

确保每次纹身前您的纹身师都替换上了新开封针头和针管，不论是颜料、置物盘还是盘内的工具用料都应该是全新的。

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Ron Meyer was 14 when a friend gave him his first tattoo, a crude design done with ink and a needle.

罗恩·梅耶尔第一次纹身时只有14岁，那个纹身是朋友用墨水和针完成的一个粗糙设计。

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Now researchers in Germany say that the rapidly vibrating tattoo needle could be a useful way of delivering vaccines under the skin instead of insoluble ink.

BBC: More antibodies are created with the tattooing method

Dr Martin Mueller, one of the researchers behind this work, says that the greater damage to the body caused by the tattoo needle may explain the better immune response.

BBC: More antibodies are created with the tattooing method

Over nine years and at least a dozen sittings under a needle in a tattoo chair (Thomas said the tattoo parlor "is a great place for just hanging out too"), the 25-year old has had bits of his story inked on his body.

WSJ: An Illustrated Guide to Devin Thomas