Many cells, bacteria, and other microorganisms are transparent to visible light and must be stained for microscopic investigation.

Many of the cells and microorganisms which are transparent to visible light, absorb or reflect the much shorter wavelengths of the ultraviolet spectrum.

Many protists also exist as individual amoeboid cells, or take such a form at some point in their life-cycle.

Many types of specialized plasma membranes can separate cell from external environment: apical, basolateral, presynaptic and postsynaptic ones, membranes of flagella, cilia, microvillus, filopodia and lamellipodia, the sarcolemma of muscle cells, as well as specialized myelin and dendritic spine membranes of neurons.

Many green algae, such as the Dasycladales encase their cells in a secreted skeleton of calcium carbonate.

Many plant cells have walls that are strong enough to withstand the osmotic pressure from the difference in solute concentration between the cell interior and distilled water.

Many cells have only a single mitochondrion, whereas others can contain several thousand mitochondria.

Many neurons have only one axon, but this axon may — and usually will — undergo extensive branching, enabling communication with many target cells.

Many of the features found in human ovaries are common to all vertebrates, including the presence of follicular cells, tunica albuginea, and so on.

Many argue that these are not themselves alive in the traditional sense, but these structures exhibit many of the characteristics of cells accepted as living cells:

Many transcription factors, especially some that are proto-oncogenes or tumor suppressors, help regulate the cell cycle and as such determine how large a cell will get and when it can divide into two daughter cells.

Many neurons in the rat and mouse hippocampus respond as place cells: that is, they fire bursts of action potentials when the animal passes through a specific part of its environment.

Many cells can completely undergo interphase without centrioles.

Many cyanobacteria even display the circadian rhythms that were once thought to exist only in eukaryotic cells ( see bacterial circadian rhythms ).

Many cells also possess a calcium ATPase, which can operate at lower intracellular concentrations of calcium and sets the normal or resting concentration of this important second messenger.

Many lichens reproduce asexually, either by vegetative reproduction or through the dispersal of diaspores containing algal and fungal cells.

Many bacteria can be found deep in the mucus, which is continuously secreted by mucus-secreting cells and removed on the luminal side.

Many starfish also possess individual photoreceptor cells across their bodies and are able to respond to light even when their eyespots are covered.

Many cells bind to components of the extracellular matrix.

Many cells possess these receptors, and the binding of an agonist will generally cause a sympathetic ( or sympathomimetic ) response ( e. g. the fight-or-flight response ).

Many forms of cutaneous and mucosal allergy are mediated for a large part by mast cells ; they play a central role in asthma, eczema, itch ( from various causes ) and allergic rhinitis and allergic conjunctivitis.

Many cancer cells are considered ' immortal ' because telomerase activity allows them to divide virtually forever, which is why they can form tumors.

Many pre-invasive lesions in cases of squamous cell carcinoma often regress after long-term reduced exposure of the affected cells and tissues to the original environmental carcinogenic stimulus, such as that seen after long-term abstention from tobacco smoking.

Many are asymmetrical, the cells twisting sideways and then untwisting again prior to division, which often takes place within cysts.

Many years later I went to see S.K. in England, where he was living at Whiteleaf, near Aylesbury, and he showed me beside his cottage there the remains of the road on which Boadicea is supposed to have travelled.

Many a motel owner -- when we've stopped there again -- has remembered us and has said he preferred our dogs to most children.

Many of its sojourners were devoted to seclusion and quiet, and lived there to the end of their days.

Many local citizens feared that there would be irregularities at the polls, and Williams got himself a permit to carry a gun and promised an orderly election.

Many people seem hopeful, yet it is difficult to predict whether or not there will be any more real attainment of Christian unity in 1961 than there was in 1861.

Many species have an erect woody stem which is covered with persistent dried leaves unless there have been fires, topped by a crown of long thin leaves.

Many contemporary Pueblo peoples object to the use of the term Anasazi, although there is still controversy among them on a native alternative.

Many processes are close to adiabatic and can be easily approximated by using an adiabatic assumption, but there is always some heat loss ; as no perfect insulators exist.

* Many traditional beliefs in the Philippines still practised to an extent today are animist and spiritist in origin in that there are rituals aimed at pacifying malevolent spirits or are apotropaic in nature.

Many of the scuba diving tours come to this area as well, where there are sunken ships, sea mountains, and cave rock formations.

Many who side with this view disagree that Luke portrays Christianity or the Roman Empire as harmless and thus reject the apologetic view because “ Acts does not present Christians as politically harmless or law abiding for there are a large number of public controversies concerning Christianity, particularly featuring Paul .” For example, to support this view Cassidy references how Paul is accused of going against the Emperor because he is “ saying that there is another king named Jesus .” ( Acts 17: 7 ) Furthermore, there are multiple examples of Paul ’ s preaching causing uprisings in various cities ( Acts 14: 2 ; 14: 19 ; 16: 19-23 ; 17: 5 ; 17: 13-14 ; 19: 28-40 ; 21: 27 ).

Many pathways and signals lead to apoptosis, but there is only one mechanism that actually causes the death of a cell.

Many dealers, craftsmen and relatively lower class samurai lived there.

Many Classical buildings line the street and part of Humboldt University is located there.

Many western human rights groups state that civil rights and free expression are severely limited in Belarus, though there are some individuals and groups that refuse to be controlled and some journalists have disappeared.

Many hippies were apolitical drop-outs, rather than students, but in the heady atmosphere of Berkeley in 1967 – 1969 there was considerable overlap of the hippie movement and the radical left.

Many scholars in those days thought it reasonable to believe that there exist means for transforming cheaper ( base ) metals into gold.

Many countries such as the United States will monitor and control the banking sector through different agencies and for different purposes, although there is usually significant cooperation between the agencies.

Many issues such as sex, narcotics and terrorism cannot or can very rarely be openly discussed in strips, although there are exceptions, usually for satire, as in Bloom County.

Many of the Scots who immigrated there were either Roman Catholics or Presbyterians, which can be seen in a number of island landmarks and place names.

Many ciphers are based on publicly known algorithms or are open source, and so it is only the difficulty of obtaining the key that determines security of the system, provided that there is no analytic attack ( i. e., a ' structural weakness ' in the algorithms or protocols used ), and assuming that the key is not otherwise available ( such as via theft, extortion, or compromise of computer systems ).

Many countries have forms of business entity unique to that country, although there are equivalents elsewhere.