为解决小鼠发育中皮层研究时参考基因选择的问题，美国德克萨斯大学达拉斯分校的研究人员评估了相关基因。结果显示 B2m、Gapdh 和 Hprt 适合做参考基因。该研究为小鼠晚期皮层发育研究提供依据，值得科研读者一读。

HPRT sells premium paper in packets of 50 sheets for $11.99 or 200 sheets for $20.99, but only in A4 size (8.27 by 11.69 inches). However, I found that 28-pound Hammermill Color Copy Paper ...

The HPRT MT810 printer, as previously said, employs direct thermal fusion technology. It uses no ribbon, toner, or ink to print directly on the printed material.

Without a functioning HPRT enzyme to help this chemical process, purines can turn into uric acid. This accumulation of uric acid can then manifest as the clinical symptoms of Lesch-Nyhan syndrome.