The researchers have noticed that some men who were sterile because their sperm cells were unable to move also had chronic infections of the respiratory tract. The connection between the two symptoms might be. Introduction: The sperm is the male gamete and participates in the sexual reproduction, called anisogamy. There is a difference between the male and female gamete as the male gamete is motile and the female gamete is sessile in nature. Sterility in men can be caused by many factors like low sperm count and low sperm motility.

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In the 1940s, the U.S. government was looking for a solution to a medical problem: the prevalence of sexually transmitted diseases (STDs) among soldiers. Several now-infamous government-funded studies used human subjects to research common STDs and treatments. In one such study, American researchers intentionally exposed more than 1300 human subjects in Guatemala to syphilis, gonorrhea, and chancroid to determine the ability of penicillin and other antibiotics to combat these diseases. Subjects of the study included Guatemalan soldiers, prisoners, prostitutes, and psychiatric patients—none of whom were informed that they were taking part in the study. 1) What type of Epidemiological Study does this fall under; Descriptive, Analytical, Retrospective, Observational, or Prospective. 2) Please explain why this study was ethical or unethical. 3) We discussed a similar tragic but famous study that happened in the U.S. (it took place in Alabama) in one of our lectures. What was the name and…

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Chapter 4, Problem 16TYK

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To review:

The researchers have noticed that some men who were sterile because their sperm cells were unable to move also had chronic infections of the respiratory tract. The connection between the two symptoms might be.

Introduction:

The sperm is the male gamete and participates in the sexual reproduction, called anisogamy. There is a difference between the male and female gamete as the male gamete is motile and the female gamete is sessile in nature. Sterility in men can be caused by many factors like low sperm count and low sperm motility.

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