国产精品国产精品一区精品国产自在现偷99精品国产在热2019国产拍偷精品网国产精品视频全国免费观看,国产精品v欧美精品v日韩精品青青精品视频国产久久国产精品久久精品国产亚洲精品国产精品国产欧美精品一区二区三区,国产精品第一页国产亚洲精品国产福利国产精品自拍国产精品视频在线观看亚洲国产精品一区二区久久国产精品国产三级国产专不,国产精品视频大陆精大陆国产国语精品2019精品国产品对白在线285年香蕉精品国产高清自在自线隔壁老王国产在线精品在线观看精品国产福利片,国产三级精品三级在专区精品国产自在现偷国产精品一区二区三区国产日韩精品欧美一区喷水亚洲精品国产精品国自产国产在线精品一区二区不卡

lalbagh tank, Bangalore, India, 1950

Max Temperature: 31.0°C

Min Temperature: 13.0°C

Protocol: ATCCNO: 30300 SPEC: This strain is shipped as a growing test tube culture. Upon arrival, remove test tube from sealed plastic envelope, remove plastic seal from cap, and loosen the cap one half turn. Add 1.0 ml of ATCC medium 802 bacterized with Enterobacter aerogenes ATCC 13048 twice weekly. When the tube is filled to within one inch of the top, decant leaving 5.0 ml in the original tube. Subcultures are established by transferring 0.5 ml of a growing culture to 5.0 ml of bacterized ATCC medium 802 in a 20 x 120 mm test tube.

Protocol: ATCCNO: 30300 SPEC: This strain is shipped as a growing test tube culture. Upon arrival, remove test tube from sealed plastic envelope, remove plastic seal from cap, and loosen the cap one half turn. Add 1.0 ml of ATCC medium 802 bacterized with Enterobacter aerogenes ATCC 13048 twice weekly. When the tube is filled to within one inch of the top, decant leaving 5.0 ml in the original tube. Subcultures are established by transferring 0.5 ml of a growing culture to 5.0 ml of bacterized ATCC medium 802 in a 20 x 120 mm test tube.

Cryoprotective Solution

DMSO ?????????????????????????????????????????????????????????????????????????????????? 1.5 ml

Fresh growth medium w/o bacteria???????????????????????????????? 7.5 ml

MgCl₂ (0.5 mM)??????????????????????????????????????????????????????????????????? 0.5 ml

CaCl₂ (0.5 mM)??????????????????????????????????????????????????????????????????? 0.5 ml

1.?? Mix the components in the order listed.? Before adding the MgCl₂ and the CaCl₂ allow the solution to return to room temperature.? When the medium is added to the DMSO the solution will warm up due to chemical heat.

2. ? Harvest cells from a culture that is at or near peak density by filtration and centrifugation at 200 x g for 1 min.

3. Adjust the concentration of cells to 2 x 10⁵/ml in fresh medium.

4.? Mix the cell preparation and the cryoprotective solution in equal portions.

5.? Dispense in 0.5 ml aliquots into 1.0 - 2.0 ml sterile plastic screw-capped cryules (special plastic vials for cryopreservation).

6.? Place vials in a controlled rate freezing unit. From room temperature cool at -1°C/min to -40°C. If freezing unit can compensate for the heat of fusion, maintain rate at -1 C/min through heat of fusion. At -40°C plunge ampules into liquid nitrogen.

7.? Ampules are stored in either the vapor or liquid phase of a nitrogen refrigerator.

8. To establish a culture from the frozen state add 1.0 ml ATCC medium 802 to the frozen ampule and place it in a 35°C water bath.? Immerse the vial? to a level just above the surface of the frozen material. Do not agitate the vial.

9.   Immediately after thawing, do not leave in water bath, aseptically remove the contents of the ampule and inoculate onto the surface of an ATCC medium 919 (non-nutrient agar) plate containing an overlay of 15.0 ml of bacterized ATCC medium 802.

10. Incubate at 25°C.

11. Once the culture is established, transfer 0.5 ml to 5.0 ml of bacterized ATCC medium 802.

12. Follow the protocol for maintenance of culture.

ATCC <<--TM Sonneborn<<--Dr. Seshachar --