Which structures allow for the removal of wastes from the developing fetus? placenta and blastocyst
blastocyst and umbilical cord
umbilical cord and placenta
embryo and blastocyst

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Based on the chart, what are the three most effective methods to protect against pregnancy?

Adouble-blinded trial for a new indication is conducted under an ind comparing two (2) marketed drugs, at twice the approved prescribed doses. on day 2, subject 603 had difficulty breathing. although it was life-threatening initially, subject 603 was treated and discharged directly from the emergency department after complete recovery. on day 5, subject 20 had a headache, which led to hospitalization and required blood pressure lowering medications. these episodes cannot be explained on the basis of the pharmacological property of either drug or the subjects' medical histories. the investigator would submit an sae report for