February 21, 2017

Homework Help: Science

Posted by Franz on Sunday, June 3, 2012 at 4:58pm.

Can you please check if my part on science is grammatically correct? Thank you very much, Writeacher.

1) In 1951 an American woman descended from African slaves freed named Henrietta Lacks, was admitted to Johns Hopkins Hospital in Baltimore.
2) In those years, scientists had been unsuccessfully trying to grow malignant human cells outside the to determine what caused cancer and ultimately how to cure it.
3) The doctors diagnosed Lacks with stage I epidermoid carcinoma of the cervix, which would require her to have radiation treatments a few times a month. During her first two-night stay in the hospital, doctors sliced several pieces of tissue from her cancerous tumor and placed them in a dish in the hopes of growing and studying them.
4)Neither Lacks nor her family gave permission for her cells to be taken. Most cells died quickly in the lab, and the few that did survive failed to grow. Her cancer cells, however, grew doubling in number every 24 hours.
5) The doctors realized that these cells had some unique features never seen before. First, these cells had an altered set of chromosomes; they possessed more than eighty chromosomes for the presence of an abnormal number of pairs of chromosomes 12, 6, 8, and 17.
6) The peculiarity of this cell line, named HeLa to avod using Lacks’s name, is due to the fact that the papillomavirus, the pathogen responsible for the majority of cervical cancers, induced a mutation in the gene encoding the telomerase, the enzyme responsible for telomere elongation.

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