The first target was a collection of onion bulb cells. Today, modern gene guns use a pulse of compressed helium in the range of 200–1,500 psi to create the energy needed to accelerate the DNA-coated particles. There are two commercial gene guns available from Bio-Rad. The PDS-1000 ...
The tube is called a pipette; various sizes are used, ranging in length from an inch to more than a foot. The part that creates pressure to move liquid in or out of the pipette—the equivalent of the eyedropper's bulb—is called the pipettor. Because the process of pipetting might be...
ato preserve freshness do not depress bulb with pipette in oil ciean pipette thoroughiy between each use store bottie with original cap in erfrigerator 要保存生气勃勃不要压下电灯泡用吸移管在油ciean吸移管thoroughiy在每用途商店bottie之间用原始的盖帽在erfrigerator[translate] ...
ause daily on the face and neck before applying the day cream todraw up the serum squeeze the white bulb of the pipette insertinto the formula and then release 在应用天奶油todraw之前使用日报在面孔和脖子清液挤压吸移管insertinto的白色电灯泡惯例然后发布[translate] ...