I’ve never actually owned an inverted microscope, but it seems it has only advantages compared to an upright microscope: taller, heavier samples; no crashing the objective into the glass slide; easier to operate, etc. Why then do people still use regular, upright microscopes? Is there a disadvantage I’m missing?
Today I read a BBC Report about how Pablo Escobar had once imported 4 hippos (1 male, 3 female) into his estate in Colombia for his provate zoo. After his downfall, while other species were shipped out, hippos were considered too big to move and expected to not survive. However, to the surprise of all […]
I have heard a pearl is a disease of oysters. Astonished by the statement, I searched a bit in deep  and I understood it is in real a protection mechanism of the oyster. I know this defense mechanism is not unique in nature. E.g. humans can isolate foreign bodies (this happens with not-extractable bullets), […]
Every other species developed flight or fins to survive their environment so what made humans develop intelligence?
T-cells are distinguished from B cells in part by their locus of differentiation/maturation (thymus). This is textbook knowledge, but I was wondering which particular person or people were responsible for making this discovery. I’d appreciate any links to their original papers/works. Thanks a lot!
Standard ‘Explanation’: I’ve seen countless neuroscience articles and experts explain that ‘cortical gyrification is advantageous because it increases surface area which obviously increases your intelligence’ (e.g. this wikipedia article). Question(s): But this explanation is woefully lacking, why does surface area matter at all? That implies that somehow empty space is contributing to cognition (since the […]
This next field season I will be collecting both blood and feather samples and I wondered how best to store the samples. The blood samples will be used for microsatellite and/or SNP analysis. The feather samples will be used for genetic sexing and/or microsatellite analysis. Feathers: can these be stored in envelopes at "room" temperature? […]
The title says it all. If you disinfect something more regularly, aren’t you just selecting for bacteria which are most robust to that method of disinfection? I’ve heard it said about some medications that they "can’t cause antibacterial resistance". In particular I’ve read that this is claimed about topical benzoyl peroxide in the context of […]
From here, I learnt that rats are moving across second stage nozzle. I am sure temperature too high. Then how rat can move without any problem?
The basic idea of inheritance is that some trait (be it morphological, molecular, embryonic, or behavioral) can be preserved in the form of genes and transmitted faithfully from one generation to another, although mutations can at times occur to generate variations of this trait. Since all life forms on Earth are thought to have descended […]