#bacter

• Bacteriuria — The presence of bacteria in freshly voided urine, confirmed and quantified through a urine culture test. Clinically, bacteriuria can be asymptomatic (frequent in pregnant women or the elderly, without presenting an inflammatory presentation) or symptomatic, in which case it represents a direct biological indicator of an active urinary tract infection (UTI).
• Bacterivorous — Feeding exclusively or predominantly on bacteria; a microscopic organism, protozoan, nematode, or lower invertebrate that consumes prokaryotic cells as its primary source of energy and nutrients. Ecologically, bacterivorous organisms play a fundamental role in soil and aquatic food webs, controlling the size of microbial populations and accelerating the recycling of mineral nutrients.
• Bacteroid — A modified, enlarged, and often branched form adopted by nitrogen-fixing bacterial cells (such as Rhizobium) after entering the host cells within the nodules of legume plants. Physiologically, the bacteroid stage represents the active metabolic phase where the microorganism loses its rigid cell wall and begins synthesizing the nitrogenase enzyme complex responsible for nitrogen fixation.
• Bactrospore — A bacterial or mycological spore characterized by an elongated, cylindrical, rod-like shape. Microbiologically, the term describes endspores generated inside certain bacteria or the reproductive structures of lower fungi, whose geometric shape is essential for taxonomic identification under the microscope and for high resistance in adverse external environments.
• Baculi — An ancient or rare scientific name utilized as the plural for 'baculus', designating rod-shaped bacteria (bacilli). Historically and morphologically, the term is encountered in early microscopy treatises to describe cylindrical aggregations of prokaryotes identified within various biological cultures or pathological fluids.