National Center for Biotechnology Information. N.p., 12 Dec. 2008. Web. <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2613216/>.

Words: federal funding, ethical obligations, iPS cells

Summary: iPS cells or adult cells are easy to work with due to their limitations, federal funding is very low, and ethical issues include killing babies/playing with god

Opinion: hard to find info, not visually appealing

Reliability: primary source, .gov, more opinion than fact based, fairly recent, and credible authors.

Words: Embryonic, Adult, unique properties, uses

Summary: Cells are regenerative, have two types: embryonic(versatile) & adult(limited), used for diabetes, cancer, blindness, deafness, bone marrow transplant.

Opinion: Has accurate facts, is easily accessed, is unbiased, visually appealing

Reliability: It has a credible author (MD), recent info.(2015), has statements backed up by facts/citations, and is on .gov website.

Reports. Oxford University Press, 15 Mar. 2001. Web. <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1083849/>.
Words: rejection, infection, expensive procedure, not ethical
Summary: there is higher chance of rejection as the cells derive from a different embryo with different blood type/dna. It is not accessible to all as it is very expensive. It raises ethical issues and gets compared to abortion.
Opinion: It is very detailed on the potential threats posed by the research. It contains unnecessary details about history of people opposing abortion. It is easy to follow as content is broken into categories.
Reliability: facts are backed up by in site citations, credible author, .gov website, old source
 

N.p., 3 Apr. 2002. Web. <https://www.newscientist.com/article/dn2124-gene-therapy-cures-bubble-boy/>.
Words: SCID, X-linked, immune cells
Summary: Welsh baby had X-linked severe combined immunodeficiency. It caused a faulty gene to stop producing T-cells that are essential for a strong immune system.
Opinion: The article was to the point and included all the maildetails from the gene therapy. It could've been more detailed and backed up by scientific facts
Reliability: It is on a .com website, does not have a credible author, has many off topic ads, and is very short. Though, it is a good enough source to talk about an experiment that took place in the 1970s.

N.p., 1 Mar. 2013. Web.
<https://www.health.harvard.edu/heart-health/repairing-the-heart-with-stem-cells>.
Summary: Stem cells were used to regenerate damaged heart tissue. After the procedure, the amount of scar tissue in patients decreased by about 50%. 
Opinion: It is very informative and has pictures to go long with the explanation of the procedure. It mentions the after-math of the treatment as well by updating about the patients' health. The tone is very friendly (asks questions), yet informative, which makes it easier of the audience to understand and stay interested. 
Reliability: It is published on Harvard Medical School. The experiment is somewhat recent and most of the writing is from a primary source from professors working at the Harvard School.

Mar. 2012. Web.
<https://consumer.healthday.com/cardiovascular-health-information-20/misc-stroke-related-heart-news-360/stem-cell-trial-failed-to-treat-heart-failure-663058.html>.
Words: heart failure, improvement, therapy
Summary: An experiment done using stem cells to treat chronic heart failure came up short in terms of effectiveness. It suggested that stem cells don’t improve most measures of heart function and had no particular effect on repairing the damages in the heart. Though, they saw very small improvement of 3.1% in the patients.
Opinion: The website is full of text and very plain. It didn't have any background information on the actual experiment and simply had the explanation of the results.
Reliability: It has allot of dialogues of the researchers' sayings on the outcome of the experiment, which makes the text more interesting to read. The author has a M.D., Ph.D. and is a professor at University of Texas. The experiment is fairly recent, but its data is proposed on a .com website.