In a study researches used stem cells to treat 130 dogs with arthritis there is a loss of cartilage tissue that cushions the bones during the study stem cells from the fat tissue of each dog were extracted and injected at the site of the arthritic joint within the same dog. The researchers found that 78% of the dogs that received this treatment showed improvements in arthritis. Which step in the treatment process was unsuccessful in the 22% of dogs that did not show improvements in arthritis?

Hurricanes i believe is the correct answer

Amoxicillin - amoxicillin, doxycycline, and cefuroxime have all been shown to have equivalent efficacy for treatment of lyme disease. however, because this patient is only 6 years old, he should not be given doxycycline as a first line treatment unless the other regimens are contraindicated. macrolides, like azithromycin should not be used first line because they are poorly effective at eradicating infection. they may be used in patients who are intolerant of penicillins and cephalosporins and who cannot take doxycycline. first generation cephalosporins like cephalexin are not effective.