Blog

A 63-year-old asymptomatic female’s clean-catch midstream ur…

A 63-year-old asymptomatic female’s clean-catch midstream urine was inoculated onto sheep blood agar with a 1µl inoculating loop. It was also plated onto CNA and MacConkey agar. After 24 hours incubation, there were 185 colonies counted on the sheep blood agar. The colonies were white, creamy, nonhemolytic colonies on sheep blood agar and CNA. There was no growth on the MacConkey agar plate. Based on the attached chart, this specimen represents: Specimen Source Colony Count/ml (Pure Culture) Interpretation Suprapubic aspiration Gram negative bacilli; any number >99% probability of infection   Gram positive bacilli; >103 >99% probability of infection Catheterization >105 >99% probability of infection   104-105 Suggestive infection   103-104 Likely infection   105 >99% probability of infection Clean voided (female) >105 80% probability of infection   104-105 Indeterminate; treat as infection if pt is symptomatic

After learning about neurons, Mariah looks at her cell phone…

After learning about neurons, Mariah looks at her cell phone and thinks about how it receives signals from the local cell tower. She realizes that there are antennas in her phone that receive radio signals from cell towers, and that these antennas are similar to _________, which are the parts of the neurons that receive incoming messages.