In an animal cell, the centrosome serves as the main microtubule organizing center and regulator of cell-cycle progression.

Golgi Apparatus also functions in lipid transport and lysosome formation.

The cell nucleus is a membrane-bound organelle present in eukaryotic cells and absent from prokaryotic cells.

Mitochondria is called the powerhouse of the cell as it uses aerobic respiration to generate adenosine triphosphate (ATP).

Bacteria are prokaryotic, mostly free-living, single cell organism that are ubiquitous in nature.

Flagella stain is a simple, rapid, and qualitative procedure for visualization of flagellar shape, curvature, arrangement, length, and number.

Delayed-type hypersensitivity (DTH) occurs more than 12 hours after exposure to certain allergens – with maximal reaction time between 48 and 72 hours.

The Coombs Test can be done by several methods – Tube test, Microcolumn test, and solid phase, polyethylene glycol (PEG).

In the indirect Coombs method, RBCs are sensitized with incomplete antibodies in vivo.

Direct Coombs Test (Direct Antiglobulin Test- DAT) is used for the detection of antibodies (IgG) or complement system factors (C3) bound to the RBC surface antigens.