Salma Walid

4 Questions 2 Answers 0 Followers

Questions related from Salma Walid

Why is the proportion of resistant bacteria like C. acnes higher for doxycycline than it is for tetracycline despite them having the same MOA?

A lot of studies that test the antibiotic susceptibility of doxycycline, tetracycline and minocycline against the acne causing bacteria C. acnes, usually obtain a higher proportion of bacteria...

11 July 2022 7,118 2 View

Why is there no band in my agarose gel after PCR amplification?

I'm doing 16s rRNA amplification using DNA extracted via the boiling method for several bacterial samples. The quantities of each PCR reaction are; DNA template - 1 ul Forward primer - 1...

02 June 2022 833 7 View

Why am I getting an indole negative test for Cutibacterium acnes?

Through my reading, I noticed many papers noted that an indole test for C. acnes appears positive, however, I am not getting the pink layer that's associated with an indole positive test. Is there...

11 February 2022 6,771 2 View

Why am I not getting a clear purple colour after gram staining Cutibacterium acnes?

After gram staining a sample from a pure C. acnes colony, the result I get is somewhere between purple and red. Is there a reason why I'm not seeing a clear purple colour for a gram-positive bacteria?

11 February 2022 3,745 8 View