Why Seminomas spread mainly via lymphatic route and NSGCT with Haematogenous route?

What is the reason of such specific orientated route of transmission?

01 January 1970 7,637 1 View

What is the reason of 'alcohal'fastness of Tuberculosis?

Mycolic acid is responsible for acid fastness. Mycolic acid by nature is a lipid rich material which must be washed when bacteria is treated with alcohal. Then what makes it alcohal fast?

01 January 1970 7,141 1 View

Why do Ricketssial rashes spare face,palm,sole? Mechanism behind it?

Ricketssia affect endothelium and due to its damage it causes maculopapular rashes but why they doesn't happen on face,sole,palms?

01 January 1970 9,203 4 View

Why primary viral pneumonia has a predilection for individuals with cardiac diseases, particularly mitral stenosis?

What is the reason of this predilection?

01 January 1970 9,739 2 View

In G6PD deficiency why we talk only about damage to rbc? Other cells should have deficiency of the same enzyme increading oxidative stress to them?

Do G6PD deficiency harmfull for all cells? Why we only talk about rbc when it comes to G6PD deficiency?

01 January 1970 7,837 6 View

What are the Non Collagenous Domains of Collagen?

What are Non collagenous domains of Collagen? And why are they called so?

01 January 1970 1,637 3 View

What are the reasons of prolapse of Facial nerve over stapes?

Facial nerve prolapse reasons?

01 January 1970 1,378 3 View

Where i can find the etymology of drugs in pharmacology? Any site regarding that?

How are names given to drugs? Is there any online site where i can get to know the origin of name of the drugs?

01 January 1970 6,320 5 View

When we say inhibition of enzyme cytochrome p450 what do we really mean?

How do a drug inhibit a metabolising enzyme? Is it due to decreased expression of gene producing enzyme?

01 January 1970 9,693 4 View

No title

Why fungus change its morphology with temprature and how is this really happening?

01 January 1970 2,382 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View