Recent studies indicate that HIV-1 originated from a. a ...

[mckennatimberlake]

Recent studies indicate that HIV-1 originated from
 
  a. a contaminated polio vaccine
  b. chimpanzees
  c. germ research laboratories
  d. none of the above

Question 2

Anti-breast-cancer medicines, like tamoxifen, are able to lock into the estrogen receptor of breast cancer cells and block the effects of estrogen.
 
  Indicate whether the statement is true or false

[flexer1n1]

Answer to Question 1

b

Answer to Question 2

TRUE

[mckennatimberlake]

Thanks for the timely response, appreciate it

[frankwu0507]

Great answer, keep it coming