Meaning of Alan. Celtic name. In Celtic, the name Alan means-Harmony, stone, or noble. Also fair, handsome. Originally a saints name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century.See also Allen..Other origins for the name Alan include-Celtic, Irish, English.The name Alan is most often used as a boy name or male name. Celtic Name Meaning-Harmony, stone, or noble. Also fair, handsome.eltic name. In Celtic, the name Alan means-Harmony, stone, or noble. Also fair, handsome. Originally a saints name, it was reintroduced to Britain during the Norman Conquest, remained popular throughout the Middle Ages, and was revived in the 19th century. See also Allen..
Hostas (Starters). Hosta or hostas are the most popular, low maintenance, shade tolerant plant in North America! Hostas come in a wide variety of sizes, shapes, colors, and are quite disease and pest free. NOTE, the pictures on are site are often of mature plants.ostas (Starters). Hosta or hostas are the most popular, low maintenance, shade tolerant plant in North America! Hostas come in a wide variety of sizes, shapes, colors, and are quite disease and pest free. NOTE, the pictures on are site are often of mature plants.
Host Range. 1  Most viruses infect specific host cells ie are host specific. 2  Host specificity is due to: 3  specific attachment sites on the host cells called receptors. 4  Receptor sites for bacteriophage are found in bacterial cell walls or fimbrae or flagella. 20nm to 14000nm in size. 2  Most are smaller than bacteria (eg Adeno virus). 3  Vaccinia virus is the same size as the small bacteria like Mycoplasma, Rickettsia & Chlamydia. 4  Contain either DNA or RNA (never both) surrounded by a protein coat (capsid) and sometimes covered by an envelope.